From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass(p=none dis=none) header.from=collabora.com ARC-Seal: i=2; a=rsa-sha256; t=1772463811; cv=pass; d=zohomail.com; s=zohoarc; b=dTJRmFliSkg+YpVCb/O34g26DOU5BrB8jEG/cfzQ5dLa2RuTPufDniyB5Li5TWjdhqN1R2IViGtwjbphmws31eMWAULaOuLAOQADAMubNc4jFxsHE42figCVaGeZUWL3QuTRRQmQS3U+s3We3WF03d3y2djrWvpjzAapBgTuB+A= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463811; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=ViKEV6K3E34y8YBULDM7wujUiITFIahQHAYDINTR4aQ=; b=I67+1Ta4JWjBPdXOoFJ1jPhssbtXNviuBXCbhU8ZFVwTWwoO63uYGbZ59nSrD5agTNynChG87AJ1SyknT4TSALsoGCIB/a5MZBeychOpmLmJ0kAE264MbHisYm8oIf3cKgxsERKt7EVw7rCKnn2Z3w2/yM3HZF7Us74vMVLFPfw= ARC-Authentication-Results: i=2; mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1772463811857242.03077049379579; Mon, 2 Mar 2026 07:03:31 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vx4mV-0004xF-E1; Mon, 02 Mar 2026 10:01:59 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vx4lZ-0004IK-5f for qemu-devel@nongnu.org; Mon, 02 Mar 2026 10:01:07 -0500 Received: from sender4-pp-f112.zoho.com ([136.143.188.112]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vx4lX-00043D-MU for qemu-devel@nongnu.org; Mon, 02 Mar 2026 10:01:00 -0500 Received: by mx.zohomail.com with SMTPS id 1772463615256201.0601352759436; Mon, 2 Mar 2026 07:00:15 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1772463617; cv=none; d=zohomail.com; s=zohoarc; b=ffEQS+3Ys1OCmjtWF4mbPxl+xLA4GMA8R2QkrNfb0jJTo61s4iFzhWcK9dMw0UTrgV+K0CiXU+FGmprtA9ypPlCRXpPfBgMWD02P8LGurHI5AmEKb9uzCkDsfxoG5aUy/khWyzBJj8AxFk1nkyuhrj9VOyF+82/kjPEz25Pywhw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463617; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=ViKEV6K3E34y8YBULDM7wujUiITFIahQHAYDINTR4aQ=; b=XmBr1nzwnkABX9hL/hymIzLxddsgA5QfrJ6OSJjcisgCSAUrIIsP1wFrtqNJ6KvCV3CdSEaliYg4FOBcwGRhf3dgxC2v829HfLWh3c3IecdFtbzCQ7cwt8IvBRGTC+OE1JIe1gT5Tp6Vm/ScZ0TRMXtJJ+SnqTXPuogobw68V4M= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=dmitry.osipenko@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1772463617; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=ViKEV6K3E34y8YBULDM7wujUiITFIahQHAYDINTR4aQ=; b=iJrFT6XDytKUQGCkjvtZWPRriNuYKq2eaVgtODCSfGnHu4HTmjTUeLpdpX6KrJjg 58MNtcqCST10dkmn7Ogk+cugnD/vME3rZaQCq5banckbEHAjPxQulPTetafvg2YVEda cyKitXMUEp7hnCn93jz0ns7GdemsHbvPahGYbqRM= From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Pierre-Eric Pelloux-Prayer , "Michael S . Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 01/18] ui/gtk: Don't disable scanout when display is refreshed Date: Mon, 2 Mar 2026 17:59:03 +0300 Message-ID: <20260302145920.735423-2-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463813292158500 Display refreshment is invoked by a timer and it erroneously disables the active scanout if it happens to be invoked after scanout has been enabled. This offending scanout-disable race condition with a timer can be easily hit when Qemu runs with a disabled vsync by using SDL or GTK displays (with vblank_mode=3D0 for GTK). Refreshment of display's content shouldn't disable the active display. Fix it by keeping the scanout's state unchanged when display is redrawn. Reviewed-by: Akihiko Odaki Acked-by: Michael S. Tsirkin Tested-by: Alex Benn=C3=A9e Acked-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Yiwei Zhang Signed-off-by: Dmitry Osipenko --- ui/gtk-egl.c | 1 - ui/gtk-gl-area.c | 1 - 2 files changed, 2 deletions(-) diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c index ae9239999cdb..0dbb429958e5 100644 --- a/ui/gtk-egl.c +++ b/ui/gtk-egl.c @@ -180,7 +180,6 @@ void gd_egl_refresh(DisplayChangeListener *dcl) =20 if (vc->gfx.glupdates) { vc->gfx.glupdates =3D 0; - gtk_egl_set_scanout_mode(vc, false); gd_egl_draw(vc); } } diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c index cd86022d264a..c709b2ce0f63 100644 --- a/ui/gtk-gl-area.c +++ b/ui/gtk-gl-area.c @@ -199,7 +199,6 @@ void gd_gl_area_refresh(DisplayChangeListener *dcl) =20 if (vc->gfx.glupdates) { vc->gfx.glupdates =3D 0; - gtk_gl_area_set_scanout_mode(vc, false); gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area)); } } --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1772463622; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=tGzRtbubuzDhXSSDiW6HzZc2CVlhypYf5kLxVUUYQns=; b=jJXuGSaPDnVWy6dgeVhvEWEbsv1fqIYwuHrrKiJLkPNhyAPUi4ME3IpjRzekpLJ2 Tki3FVc6V7WFgKLbCQqolWjz36pEkXYa1FFd8fFKS6G85z5quRFUG3qqu5hMWr2hoFx itcCcrJTOWIyAtTzwE03vh69tg0iPCBnoKTdVyNQ= From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Pierre-Eric Pelloux-Prayer , "Michael S . Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 02/18] ui/sdl2: Don't disable scanout when display is refreshed Date: Mon, 2 Mar 2026 17:59:04 +0300 Message-ID: <20260302145920.735423-3-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463758857158500 Display refreshment is invoked by a timer and it erroneously disables the active scanout if it happens to be invoked after scanout has been enabled. This offending scanout-disable race condition with a timer can be easily hit when Qemu runs with a disabled vsync by using SDL or GTK displays (with vblank_mode=3D0 for GTK). Refreshment of display's content shouldn't disable the active display. Fix it by keeping the scanout's state unchanged when display is redrawn. Reviewed-by: Akihiko Odaki Acked-by: Michael S. Tsirkin Tested-by: Alex Benn=C3=A9e Acked-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Yiwei Zhang Signed-off-by: Dmitry Osipenko --- ui/sdl2-gl.c | 1 - 1 file changed, 1 deletion(-) diff --git a/ui/sdl2-gl.c b/ui/sdl2-gl.c index 3be17d1079af..5eca0248233e 100644 --- a/ui/sdl2-gl.c +++ b/ui/sdl2-gl.c @@ -51,7 +51,6 @@ static void sdl2_gl_render_surface(struct sdl2_console *s= con) int ww, wh; =20 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); - sdl2_set_scanout_mode(scon, false); =20 SDL_GetWindowSize(scon->real_window, &ww, &wh); surface_gl_setup_viewport(scon->gls, scon->surface, ww, wh); --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass(p=none dis=none) header.from=collabora.com ARC-Seal: i=2; a=rsa-sha256; t=1772463709; cv=pass; d=zohomail.com; s=zohoarc; b=Jw53g6jAEgp3o6rur1tWwC6NOS81X1FyGDDlRAnIq8Lm9dAYFCeFgfLMLPL75CMvq5hgXKXeFnrAEwt54QII2N5+tOmji32AyudwCHGtzQeokL9fGIveai41hHNhKIuSzHjxpvZzrdsx3SSqwE6GaguhRKbj0T1HbrQ1w7DfU7M= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463709; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=C6bVJ5uFMUnYseJrdFu6UyXmpjkVTiLLY8DT2cYl7iM=; b=jFDCgUS/6vBu0f+gzlSu6o13mTKjIMVYS235kAUQ9FzHEPalxRwiq/bBOlzVTMfUrWGXpqGb6KXcyEX+Lf8gHzCrcYsHie72aKCWuTOSlO5jVYC1VKnXdCzCvMQXSNug9bb5s2141YxvLYRkrbFGOFHa7hc1TSHZtpcAoU2c9IM= ARC-Authentication-Results: i=2; mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1772463709345722.9495097857765; Mon, 2 Mar 2026 07:01:49 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vx4m1-0004WG-Ek; Mon, 02 Mar 2026 10:01:29 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vx4lU-0004FN-ME for qemu-devel@nongnu.org; Mon, 02 Mar 2026 10:00:57 -0500 Received: from sender4-pp-f112.zoho.com ([136.143.188.112]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vx4lR-00042O-6Z for qemu-devel@nongnu.org; Mon, 02 Mar 2026 10:00:55 -0500 Received: by mx.zohomail.com with SMTPS id 1772463627488906.8360510487804; Mon, 2 Mar 2026 07:00:27 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1772463628; cv=none; d=zohomail.com; s=zohoarc; b=mk9BlPwQppN/o9h0hQmgIvM0vuKdmun6VPkewbm4IO2iZBypAed0+fnUFNutZ9D3/Ow+rkKnIL/vK7tv1Y+vqzVckHWrj2yq7Sg1q4+mERHZ2JtGRiTTtT75u+XLY7q3DVI10fW5o4oR7euB9YuRiR6sv/GuQCOLqFD0RLmRQr8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463628; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=C6bVJ5uFMUnYseJrdFu6UyXmpjkVTiLLY8DT2cYl7iM=; b=T8l/cmRMly33tr7d7t17qyNKPYlt9PygKdWRC5e1KqRAC7i8KrsYrrx2NecczltflCedTT3rnA9rIhtw3bY9EonCNFM8iBVzAtoMZQfkJPb4DVrSx0BnIKU7+DPvwXrAvs7CEU0jfOVjCA0Zd0l11iKrMETkP5ATQVtvGq0VT7s= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=dmitry.osipenko@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1772463628; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Message-Id:Reply-To; bh=C6bVJ5uFMUnYseJrdFu6UyXmpjkVTiLLY8DT2cYl7iM=; b=bUnGOmAL37AxbGIE/z2qQedBNWxodippHN2eaxSfIazLDH+S7zha9jERFZkyIsxd 1HmnWoQFMqnG4/4RqG3nHgGgD4jw1E+PUl8OcuZvU6jY76s8qbtMqDaH47zePyU3UCA snvP5TNa6LkZCshMgI+Kznvx3tgf63kbhOOvSH0k= From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Pierre-Eric Pelloux-Prayer , "Michael S . Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 03/18] ui/egl: Don't change bound GL context when creating new context Date: Mon, 2 Mar 2026 17:59:05 +0300 Message-ID: <20260302145920.735423-4-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463710333158500 Content-Type: text/plain; charset="utf-8" Don't change bound GL context when creating new GL context for consistency with behavior expected by virglrenderer that assumes context-creation doesn= 't switch context. eglCreateContext() doesn't require GL context to be bound when it's invoked. Update qemu_egl_create_context() to spawn GL sub-contexts from a common parent GL context instead of a currently-bound context. Signed-off-by: Dmitry Osipenko --- ui/dbus.c | 2 -- ui/egl-context.c | 3 +-- ui/egl-headless.c | 2 -- ui/gtk-egl.c | 4 ---- ui/spice-display.c | 2 -- 5 files changed, 1 insertion(+), 12 deletions(-) diff --git a/ui/dbus.c b/ui/dbus.c index 905ee6fea71b..750a064e3fbf 100644 --- a/ui/dbus.c +++ b/ui/dbus.c @@ -47,8 +47,6 @@ static DBusDisplay *dbus_display; static QEMUGLContext dbus_create_context(DisplayGLCtx *dgc, QEMUGLParams *params) { - eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, - qemu_egl_rn_ctx); return qemu_egl_create_context(dgc, params); } =20 diff --git a/ui/egl-context.c b/ui/egl-context.c index aed3e3ba1f3f..f9a998768beb 100644 --- a/ui/egl-context.c +++ b/ui/egl-context.c @@ -19,8 +19,7 @@ QEMUGLContext qemu_egl_create_context(DisplayGLCtx *dgc, }; bool gles =3D (qemu_egl_mode =3D=3D DISPLAY_GL_MODE_ES); =20 - ctx =3D eglCreateContext(qemu_egl_display, qemu_egl_config, - eglGetCurrentContext(), + ctx =3D eglCreateContext(qemu_egl_display, qemu_egl_config, qemu_egl_rn= _ctx, gles ? ctx_att_gles : ctx_att_core); return ctx; } diff --git a/ui/egl-headless.c b/ui/egl-headless.c index 1f6b845500dd..19955792ac95 100644 --- a/ui/egl-headless.c +++ b/ui/egl-headless.c @@ -42,8 +42,6 @@ static void egl_gfx_switch(DisplayChangeListener *dcl, static QEMUGLContext egl_create_context(DisplayGLCtx *dgc, QEMUGLParams *params) { - eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, - qemu_egl_rn_ctx); return qemu_egl_create_context(dgc, params); } =20 diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c index 0dbb429958e5..6b3519419039 100644 --- a/ui/gtk-egl.c +++ b/ui/gtk-egl.c @@ -217,10 +217,6 @@ void gd_egl_switch(DisplayChangeListener *dcl, QEMUGLContext gd_egl_create_context(DisplayGLCtx *dgc, QEMUGLParams *params) { - VirtualConsole *vc =3D container_of(dgc, VirtualConsole, gfx.dgc); - - eglMakeCurrent(qemu_egl_display, vc->gfx.esurface, - vc->gfx.esurface, vc->gfx.ectx); return qemu_egl_create_context(dgc, params); } =20 diff --git a/ui/spice-display.c b/ui/spice-display.c index 28399f8a8174..ae0f771c2a38 100644 --- a/ui/spice-display.c +++ b/ui/spice-display.c @@ -1033,8 +1033,6 @@ static void spice_gl_switch(DisplayChangeListener *dc= l, static QEMUGLContext qemu_spice_gl_create_context(DisplayGLCtx *dgc, QEMUGLParams *params) { - eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, - qemu_egl_rn_ctx); return qemu_egl_create_context(dgc, params); } =20 --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass(p=none dis=none) header.from=collabora.com ARC-Seal: i=2; a=rsa-sha256; t=1772463764; cv=pass; d=zohomail.com; s=zohoarc; b=lyk6lmf4/mipt49DJoa6HaEytiy0BcViRrr9IzWCg45rr0awQgCkfQ6WQUqSs9lgnrKav22jsfdPzs1XUfMlVmNWnFH+49JALDxBLEotqmTEDwb6hVu1yYyo0jQ8rAVsCq5fBjKEC3+u+H4+qmvo7imf5AsrBR4NDNvuocrMvDo= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463764; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 04/18] ui/gdk: Restore original context after new context creation Date: Mon, 2 Mar 2026 17:59:06 +0300 Message-ID: <20260302145920.735423-5-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463764842158501 Content-Type: text/plain; charset="utf-8" Get currently bound GL context when creating new GL context and restore it after the creation for consistency with behavior expected by virglrender= er that assumes context-creation doesn't switch context. Signed-off-by: Dmitry Osipenko Reviewed-by: Marc-Andr=C3=A9 Lureau --- ui/gtk-gl-area.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c index c709b2ce0f63..ce49000d3f17 100644 --- a/ui/gtk-gl-area.c +++ b/ui/gtk-gl-area.c @@ -250,11 +250,13 @@ QEMUGLContext gd_gl_area_create_context(DisplayGLCtx = *dgc, QEMUGLParams *params) { VirtualConsole *vc =3D container_of(dgc, VirtualConsole, gfx.dgc); + GdkGLContext *ctx, *current_ctx; GdkWindow *window; - GdkGLContext *ctx; GError *err =3D NULL; int major, minor; =20 + current_ctx =3D gdk_gl_context_get_current(); + window =3D gtk_widget_get_window(vc->gfx.drawing_area); ctx =3D gdk_window_create_gl_context(window, &err); if (err) { @@ -275,8 +277,12 @@ QEMUGLContext gd_gl_area_create_context(DisplayGLCtx *= dgc, =20 gdk_gl_context_make_current(ctx); gdk_gl_context_get_version(ctx, &major, &minor); - gdk_gl_context_clear_current(); - gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); + + if (current_ctx) { + gdk_gl_context_make_current(current_ctx); + } else { + gdk_gl_context_clear_current(); + } =20 if (gd_cmp_gl_context_version(major, minor, params) =3D=3D -1) { /* created ctx version < requested version */ --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass(p=none dis=none) header.from=collabora.com ARC-Seal: i=2; a=rsa-sha256; t=1772463778; cv=pass; d=zohomail.com; s=zohoarc; b=GY9vxCyh9zGPSGI+MB8noxaOAGtsP0bmI1tI4zvfslQMVZWxMG9FF7jw397p6wdSxo4znlrBOXTgNGF5OoUYLa2GTaVcoEpMZfhd7pQ6nWlVN7xDFDN4ifpHkPHfnxcV1UtB4a+Sdv/EZFvgMe0DSf1KGjbr7iTfR+jjXq9zueM= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; 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Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 05/18] ui/sdl2: Restore original context after new context creation Date: Mon, 2 Mar 2026 17:59:07 +0300 Message-ID: <20260302145920.735423-6-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463794679158500 SDL API changes GL context to a newly created GL context, which differs from other GL providers that don't switch context. Change SDL backend to restore the original GL context. This allows Qemu's virtio-gpu to support new virglrenderer async-fencing feature for Virgl contexts, otherwise virglrenderer's vrend creates a fence-sync context on the Qemu's main-loop thread that erroneously stays in-use by the main-loop after creation, not allowing vrend's fence-sync thread switch to this new context that belongs to it. Reviewed-by: Akihiko Odaki Acked-by: Michael S. Tsirkin Tested-by: Alex Benn=C3=A9e Acked-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Yiwei Zhang Signed-off-by: Dmitry Osipenko --- ui/sdl2-gl.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/ui/sdl2-gl.c b/ui/sdl2-gl.c index 5eca0248233e..fbac3edbc09d 100644 --- a/ui/sdl2-gl.c +++ b/ui/sdl2-gl.c @@ -139,10 +139,12 @@ QEMUGLContext sdl2_gl_create_context(DisplayGLCtx *dg= c, QEMUGLParams *params) { struct sdl2_console *scon =3D container_of(dgc, struct sdl2_console, d= gc); - SDL_GLContext ctx; + SDL_GLContext ctx, current_ctx; =20 assert(scon->opengl); =20 + current_ctx =3D SDL_GL_GetCurrentContext(); + SDL_GL_MakeCurrent(scon->real_window, scon->winctx); =20 SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1); @@ -167,6 +169,9 @@ QEMUGLContext sdl2_gl_create_context(DisplayGLCtx *dgc, SDL_GL_CONTEXT_PROFILE_ES); ctx =3D SDL_GL_CreateContext(scon->real_window); } + + SDL_GL_MakeCurrent(scon->real_window, current_ctx); + return (QEMUGLContext)ctx; } =20 --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1772463646; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=YBRytc8sjSwUIzrPLBSSeDWw7jV8bG5DAbKRYlpPhIE=; b=hd/BwjfuTrcEptK5gi23pKrgiHd4Gt/lJmM2I1jsb+16myfzGduscCJOJstz32PU O6WmCQulBuC/+xxNTyq6EIS+mN+9meiWhCTTUzBVxKrQ1ws0tkIW4XmuI6NyZayb9A9 JmuiUKOK4G3Nn0rqThQbUr6wPbT23IqPEkLO1ogI= From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Pierre-Eric Pelloux-Prayer , "Michael S . Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 06/18] ui/sdl2: Implement dpy dmabuf functions Date: Mon, 2 Mar 2026 17:59:08 +0300 Message-ID: <20260302145920.735423-7-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463791282158500 From: Pierre-Eric Pelloux-Prayer If EGL is used, we can rely on dmabuf to import textures without doing copies. To get this working on X11, we use the existing SDL hint: SDL_HINT_VIDEO_X11_FORCE_EGL (because dmabuf can't be used with GLX). Reviewed-by: Akihiko Odaki Acked-by: Michael S. Tsirkin Tested-by: Alex Benn=C3=A9e Signed-off-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Yiwei Zhang Signed-off-by: Dmitry Osipenko --- include/ui/sdl2.h | 7 +++++ meson.build | 6 ++--- ui/sdl2-gl.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++ ui/sdl2.c | 42 ++++++++++++++++++++++++++++++ 4 files changed, 117 insertions(+), 4 deletions(-) diff --git a/include/ui/sdl2.h b/include/ui/sdl2.h index dbe6e3d9739b..9daf5ecffae7 100644 --- a/include/ui/sdl2.h +++ b/include/ui/sdl2.h @@ -45,6 +45,7 @@ struct sdl2_console { bool gui_keysym; SDL_GLContext winctx; QKbdState *kbd; + bool has_dmabuf; #ifdef CONFIG_OPENGL QemuGLShader *gls; egl_fb guest_fb; @@ -96,5 +97,11 @@ void sdl2_gl_scanout_texture(DisplayChangeListener *dcl, void *d3d_tex2d); void sdl2_gl_scanout_flush(DisplayChangeListener *dcl, uint32_t x, uint32_t y, uint32_t w, uint32_t h); +void sdl2_gl_scanout_dmabuf(DisplayChangeListener *dcl, + QemuDmaBuf *dmabuf); +void sdl2_gl_release_dmabuf(DisplayChangeListener *dcl, + QemuDmaBuf *dmabuf); +bool sdl2_gl_has_dmabuf(DisplayChangeListener *dcl); +void sdl2_gl_console_init(struct sdl2_console *scon); =20 #endif /* SDL2_H */ diff --git a/meson.build b/meson.build index 3cd1d8dbc669..0ce84d45e6f3 100644 --- a/meson.build +++ b/meson.build @@ -1937,10 +1937,8 @@ if get_option('gtk') \ endif endif =20 -x11 =3D not_found -if gtkx11.found() - x11 =3D dependency('x11', method: 'pkg-config', required: gtkx11.found()) -endif +x11 =3D dependency('x11', method: 'pkg-config', required: gtkx11.found()) + png =3D not_found if get_option('png').allowed() and have_system png =3D dependency('libpng', version: '>=3D1.6.34', required: get_optio= n('png'), diff --git a/ui/sdl2-gl.c b/ui/sdl2-gl.c index fbac3edbc09d..697ba2169c34 100644 --- a/ui/sdl2-gl.c +++ b/ui/sdl2-gl.c @@ -26,6 +26,8 @@ */ =20 #include "qemu/osdep.h" +#include "qemu/main-loop.h" +#include "qemu/error-report.h" #include "ui/console.h" #include "ui/input.h" #include "ui/sdl2.h" @@ -250,3 +252,67 @@ void sdl2_gl_scanout_flush(DisplayChangeListener *dcl, =20 SDL_GL_SwapWindow(scon->real_window); } + +void sdl2_gl_scanout_dmabuf(DisplayChangeListener *dcl, + QemuDmaBuf *dmabuf) +{ + struct sdl2_console *scon =3D container_of(dcl, struct sdl2_console, d= cl); + const int *fds; + + assert(scon->opengl); + SDL_GL_MakeCurrent(scon->real_window, scon->winctx); + + egl_dmabuf_import_texture(dmabuf); + if (!qemu_dmabuf_get_texture(dmabuf)) { + fds =3D qemu_dmabuf_get_fds(dmabuf, NULL); + error_report("%s: failed fd=3D%d", __func__, fds ? fds[0] : -1); + return; + } + + sdl2_gl_scanout_texture(dcl, qemu_dmabuf_get_texture(dmabuf), false, + qemu_dmabuf_get_width(dmabuf), + qemu_dmabuf_get_height(dmabuf), + 0, 0, + qemu_dmabuf_get_width(dmabuf), + qemu_dmabuf_get_height(dmabuf), + NULL); + + if (qemu_dmabuf_get_allow_fences(dmabuf)) { + scon->guest_fb.dmabuf =3D dmabuf; + } +} + +void sdl2_gl_release_dmabuf(DisplayChangeListener *dcl, + QemuDmaBuf *dmabuf) +{ + egl_dmabuf_release_texture(dmabuf); +} + +bool sdl2_gl_has_dmabuf(DisplayChangeListener *dcl) +{ + struct sdl2_console *scon =3D container_of(dcl, struct sdl2_console, d= cl); + + return scon->has_dmabuf; +} + +void sdl2_gl_console_init(struct sdl2_console *scon) +{ + bool hidden =3D scon->hidden; + + scon->hidden =3D true; + scon->surface =3D qemu_create_displaysurface(1, 1); + sdl2_window_create(scon); + + /* + * QEMU checks whether console supports dma-buf before switching + * to the console. To break this chicken-egg problem we pre-check + * dma-buf availability beforehand using a dummy SDL window. + */ + scon->has_dmabuf =3D qemu_egl_has_dmabuf(); + + sdl2_window_destroy(scon); + qemu_free_displaysurface(scon->surface); + + scon->surface =3D NULL; + scon->hidden =3D hidden; +} diff --git a/ui/sdl2.c b/ui/sdl2.c index 032dc14bc398..3bb2676f847b 100644 --- a/ui/sdl2.c +++ b/ui/sdl2.c @@ -35,6 +35,10 @@ #include "qemu/log.h" #include "qemu-main.h" =20 +#ifdef CONFIG_X11 +#include +#endif + static int sdl2_num_outputs; static struct sdl2_console *sdl2_console; =20 @@ -120,6 +124,9 @@ void sdl2_window_create(struct sdl2_console *scon) /* The SDL renderer is only used by sdl2-2D, when OpenGL is disabl= ed */ scon->real_renderer =3D SDL_CreateRenderer(scon->real_window, -1, = 0); } + + qemu_egl_display =3D eglGetCurrentDisplay(); + sdl_update_caption(scon); } =20 @@ -808,6 +815,10 @@ static const DisplayChangeListenerOps dcl_gl_ops =3D { .dpy_gl_scanout_disable =3D sdl2_gl_scanout_disable, .dpy_gl_scanout_texture =3D sdl2_gl_scanout_texture, .dpy_gl_update =3D sdl2_gl_scanout_flush, + + .dpy_gl_scanout_dmabuf =3D sdl2_gl_scanout_dmabuf, + .dpy_gl_release_dmabuf =3D sdl2_gl_release_dmabuf, + .dpy_has_dmabuf =3D sdl2_gl_has_dmabuf, }; =20 static bool @@ -835,6 +846,35 @@ static void sdl2_display_early_init(DisplayOptions *o) } } =20 +static void sdl2_set_hint_x11_force_egl(void) +{ +#if defined(SDL_HINT_VIDEO_X11_FORCE_EGL) && defined(CONFIG_OPENGL) && \ + defined(CONFIG_X11) + Display *x_disp =3D XOpenDisplay(NULL); + EGLDisplay egl_display; + + if (!x_disp) { + return; + } + + /* Prefer EGL over GLX to get dma-buf support. */ + egl_display =3D eglGetDisplay((EGLNativeDisplayType)x_disp); + + if (egl_display !=3D EGL_NO_DISPLAY) { + /* + * Setting X11_FORCE_EGL hint doesn't make SDL to prefer X11 over + * Wayland. SDL will use Wayland driver even if XWayland presents. + * It's always safe to set the hint even if X11 is not used by SDL. + * SDL will work regardless of the hint. + */ + SDL_SetHint(SDL_HINT_VIDEO_X11_FORCE_EGL, "1"); + eglTerminate(egl_display); + } + + XCloseDisplay(x_disp); +#endif +} + static void sdl2_display_init(DisplayState *ds, DisplayOptions *o) { uint8_t data =3D 0; @@ -862,6 +902,7 @@ static void sdl2_display_init(DisplayState *ds, Display= Options *o) SDL_SetHint(SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED, "0"); #endif SDL_SetHint(SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4, "1"); + sdl2_set_hint_x11_force_egl(); SDL_EnableScreenSaver(); memset(&info, 0, sizeof(info)); SDL_VERSION(&info.version); @@ -908,6 +949,7 @@ static void sdl2_display_init(DisplayState *ds, Display= Options *o) sdl2_console[i].kbd =3D qkbd_state_init(con); if (display_opengl) { qemu_console_set_display_gl_ctx(con, &sdl2_console[i].dgc); + sdl2_gl_console_init(&sdl2_console[i]); } register_displaychangelistener(&sdl2_console[i].dcl); 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Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 07/18] virtio-gpu: Ensure BHs are invoked only from main-loop thread Date: Mon, 2 Mar 2026 17:59:09 +0300 Message-ID: <20260302145920.735423-8-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463734290158500 Content-Type: text/plain; charset="utf-8" QEMU's display GL core is tied to main-loop thread and virtio-gpu interacts with display while processing GPU commands. Virtio-gpu BHs work in generic AIO context that can be invoked on vCPU thread, while GL and UI toolkits are bound to the main-loop thread. Make virtio-gpu BHs use iohandler AIO context that is handled in a main-loop thread only. 0 SDL_GL_MakeCurrent() (libSDL3) 1 SDL_GL_MakeCurrent_REAL() (libSDL2) 2 sdl2_gl_make_context_current() (ui/sdl2-gl.c:201) 3 make_current() (virglrenderer.c:639) 4 vrend_finish_context_switch() (vrend_renderer.c:11630) 5 vrend_hw_switch_context() (vrend_renderer.c:11613) 6 vrend_renderer_force_ctx_0() (vrend_renderer.c:12986) 7 virgl_renderer_force_ctx_0() (virglrenderer.c:460) 8 virtio_gpu_virgl_process_cmd() (virtio-gpu-virgl.c:1013) 9 virtio_gpu_process_cmdq() (virtio-gpu.c:1050) 10 virtio_gpu_gl_handle_ctrl() (virtio-gpu-gl.c:86) 11 aio_bh_poll() (util/async.c) 12 aio_poll() (util/aio-posix.c) 13 blk_pwrite() (block/block-gen.c:1985) 14 pflash_update() (pflash_cfi01.c:396) 15 pflash_write() (pflash_cfi01.c:541) 16 memory_region_dispatch_write() (system/memory.c:1554) 17 flatview_write() (system/physmem.c:3333) 18 address_space_write() (system/physmem.c:3453) 19 kvm_cpu_exec() (accel/kvm/kall-all.c:3248) 20 kvm_vcpu_thread_fn() (accel/kvm/kaccel-ops.c:53) Cc: qemu-stable@nongnu.org Signed-off-by: Dmitry Osipenko --- hw/display/virtio-gpu-virgl.c | 4 +--- hw/display/virtio-gpu.c | 6 +++--- include/hw/virtio/virtio.h | 7 +++++++ 3 files changed, 11 insertions(+), 6 deletions(-) diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c index 0f754829fb71..97baf9b8ca96 100644 --- a/hw/display/virtio-gpu-virgl.c +++ b/hw/display/virtio-gpu-virgl.c @@ -1203,9 +1203,7 @@ int virtio_gpu_virgl_init(VirtIOGPU *g) } =20 #if VIRGL_VERSION_MAJOR >=3D 1 - gl->cmdq_resume_bh =3D aio_bh_new(qemu_get_aio_context(), - virtio_gpu_virgl_resume_cmdq_bh, - g); + gl->cmdq_resume_bh =3D virtio_bh_io_new(virtio_gpu_virgl_resume_cmdq_b= h, g); #endif =20 return 0; diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index 643e91ca2a7a..0d88e7b3cdff 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -1526,9 +1526,9 @@ void virtio_gpu_device_realize(DeviceState *qdev, Err= or **errp) =20 g->ctrl_vq =3D virtio_get_queue(vdev, 0); g->cursor_vq =3D virtio_get_queue(vdev, 1); - g->ctrl_bh =3D virtio_bh_new_guarded(qdev, virtio_gpu_ctrl_bh, g); - g->cursor_bh =3D virtio_bh_new_guarded(qdev, virtio_gpu_cursor_bh, g); - g->reset_bh =3D qemu_bh_new(virtio_gpu_reset_bh, g); + g->ctrl_bh =3D virtio_bh_io_new(virtio_gpu_ctrl_bh, g); + g->cursor_bh =3D virtio_bh_io_new(virtio_gpu_cursor_bh, g); + g->reset_bh =3D virtio_bh_io_new(virtio_gpu_reset_bh, g); qemu_cond_init(&g->reset_cond); QTAILQ_INIT(&g->reslist); QTAILQ_INIT(&g->cmdq); diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index 9dd93cf965ae..bc1ddd3bc4e0 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -547,4 +547,11 @@ QEMUBH *virtio_bh_new_guarded_full(DeviceState *dev, #define virtio_bh_new_guarded(dev, cb, opaque) \ virtio_bh_new_guarded_full((dev), (cb), (opaque), (stringify(cb))) =20 +/* + * The "_io" variant runs BH only on a main-loop thread, while generic BH + * may run on a vCPU thread. + */ +#define virtio_bh_io_new(cb, opaque) \ + aio_bh_new(iohandler_get_aio_context(), (cb), (opaque)) + #endif --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1772463659; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=0cBznVL4bLci0b6L4+I4mjnZWxuaiqA7bDburM1R1Gg=; b=fITFHkXG6VOp/FVBZDcBiwxTxBn6WGJ7dsAYU7sTBz0FY0PbX6fEJ2BZS17ID91U tNhVgeV2TAtyAjpKpJzYHhUAUmr5me+hX2IriB+dX3S6SF2VLNzs5yxd7GfxOUjxe58 UPbP/ueg0Ow/+XzXmeOCOKStuD11+bWgCxd3ADbk= From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Pierre-Eric Pelloux-Prayer , "Michael S . Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 08/18] virtio-gpu: Handle virgl fence creation errors Date: Mon, 2 Mar 2026 17:59:10 +0300 Message-ID: <20260302145920.735423-9-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463847576158500 Print out error messages when virgl fence creation fails to aid debugging of the fence-related bugs. Reviewed-by: Akihiko Odaki Acked-by: Michael S. Tsirkin Tested-by: Alex Benn=C3=A9e Acked-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Yiwei Zhang Tested-by: Yiwei Zhang Signed-off-by: Dmitry Osipenko --- hw/display/virtio-gpu-virgl.c | 27 ++++++++++++++++++++++----- 1 file changed, 22 insertions(+), 5 deletions(-) diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c index 97baf9b8ca96..eac37e7c5527 100644 --- a/hw/display/virtio-gpu-virgl.c +++ b/hw/display/virtio-gpu-virgl.c @@ -900,6 +900,7 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { bool cmd_suspended =3D false; + int ret; =20 VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr); =20 @@ -1000,14 +1001,30 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g, trace_virtio_gpu_fence_ctrl(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type); #if VIRGL_VERSION_MAJOR >=3D 1 if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_INFO_RING_IDX) { - virgl_renderer_context_create_fence(cmd->cmd_hdr.ctx_id, - VIRGL_RENDERER_FENCE_FLAG_MERG= EABLE, - cmd->cmd_hdr.ring_idx, - cmd->cmd_hdr.fence_id); 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dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1772463665; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=JvQTGUtiV4ZkF/IOnr+fWBU0PLaUZVPeoXacL05ibzc=; b=UNHYonvVnropYw3hLjcImDF0RN8pvhvXFNG2dhH/ABBowtD+4u2TujEGnX+G8URI 9R2p28hHgb4qLIFO3e95fDUb5nCTiZFLjdl5+wV4WWNSEI9Ft5ExWG61pIYn4tKl2i2 mOwM2cbT4cLQeRLqq251p9nDf1/qM4/FaNWr/NEE= From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Pierre-Eric Pelloux-Prayer , "Michael S . Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 09/18] virtio-gpu: Support asynchronous fencing Date: Mon, 2 Mar 2026 17:59:11 +0300 Message-ID: <20260302145920.735423-10-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463915119158500 Support asynchronous fencing feature of virglrenderer. It allows Qemu to handle fence as soon as it's signalled instead of periodically polling the fence status. This feature is required for enabling DRM context support in Qemu because legacy fencing mode isn't supported for DRM contexts in virglrenderer. Reviewed-by: Akihiko Odaki Acked-by: Michael S. Tsirkin Tested-by: Alex Benn=C3=A9e Reviewed-by: Alex Benn=C3=A9e Acked-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Yiwei Zhang Tested-by: Yiwei Zhang Signed-off-by: Dmitry Osipenko --- hw/display/virtio-gpu-gl.c | 5 ++ hw/display/virtio-gpu-virgl.c | 125 +++++++++++++++++++++++++++++++++ include/hw/virtio/virtio-gpu.h | 11 +++ meson.build | 2 + 4 files changed, 143 insertions(+) diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c index b98ef2ef9877..3e0680880e14 100644 --- a/hw/display/virtio-gpu-gl.c +++ b/hw/display/virtio-gpu-gl.c @@ -169,6 +169,11 @@ static void virtio_gpu_gl_device_unrealize(DeviceState= *qdev) if (gl->renderer_state >=3D RS_INITED) { #if VIRGL_VERSION_MAJOR >=3D 1 qemu_bh_delete(gl->cmdq_resume_bh); + + if (gl->async_fence_bh) { + virtio_gpu_virgl_reset_async_fences(g); + qemu_bh_delete(gl->async_fence_bh); + } #endif if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { timer_free(gl->print_stats); diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c index eac37e7c5527..d2543b04e588 100644 --- a/hw/display/virtio-gpu-virgl.c +++ b/hw/display/virtio-gpu-virgl.c @@ -24,6 +24,23 @@ =20 #include =20 +/* + * VIRGL_CHECK_VERSION available since libvirglrenderer 1.0.1 and was fixed + * in 1.1.0. Undefine bugged version of the macro and provide our own. + */ +#if defined(VIRGL_CHECK_VERSION) && \ + VIRGL_VERSION_MAJOR =3D=3D 1 && VIRGL_VERSION_MINOR < 1 +#undef VIRGL_CHECK_VERSION +#endif + +#ifndef VIRGL_CHECK_VERSION +#define VIRGL_CHECK_VERSION(major, minor, micro) \ + (VIRGL_VERSION_MAJOR > (major) || \ + VIRGL_VERSION_MAJOR =3D=3D (major) && VIRGL_VERSION_MINOR > (minor) |= | \ + VIRGL_VERSION_MAJOR =3D=3D (major) && VIRGL_VERSION_MINOR =3D=3D (min= or) && \ + VIRGL_VERSION_MICRO >=3D (micro)) +#endif + struct virtio_gpu_virgl_resource { struct virtio_gpu_simple_resource base; MemoryRegion *mr; @@ -1079,6 +1096,103 @@ static void virgl_write_context_fence(void *opaque,= uint32_t ctx_id, } #endif =20 +void virtio_gpu_virgl_reset_async_fences(VirtIOGPU *g) +{ + struct virtio_gpu_virgl_context_fence *f; + VirtIOGPUGL *gl =3D VIRTIO_GPU_GL(g); + + while (!QSLIST_EMPTY(&gl->async_fenceq)) { + f =3D QSLIST_FIRST(&gl->async_fenceq); + + QSLIST_REMOVE_HEAD(&gl->async_fenceq, next); + + g_free(f); + } +} + +#if VIRGL_CHECK_VERSION(1, 1, 2) +static void virtio_gpu_virgl_async_fence_bh(void *opaque) +{ + QSLIST_HEAD(, virtio_gpu_virgl_context_fence) async_fenceq; + struct virtio_gpu_ctrl_command *cmd, *tmp; + struct virtio_gpu_virgl_context_fence *f; + VirtIOGPU *g =3D opaque; + VirtIOGPUGL *gl =3D VIRTIO_GPU_GL(g); + + if (gl->renderer_state !=3D RS_INITED) { + return; + } + + QSLIST_MOVE_ATOMIC(&async_fenceq, &gl->async_fenceq); + + while (!QSLIST_EMPTY(&async_fenceq)) { + f =3D QSLIST_FIRST(&async_fenceq); + + QSLIST_REMOVE_HEAD(&async_fenceq, next); + + QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) { + /* + * the guest can end up emitting fences out of order + * so we should check all fenced cmds not just the first one. + */ + if (cmd->cmd_hdr.fence_id > f->fence_id) { + continue; + } + if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_INFO_RING_IDX) { + if (cmd->cmd_hdr.ring_idx !=3D f->ring_idx) { + continue; + } + if (cmd->cmd_hdr.ctx_id !=3D f->ctx_id) { + continue; + } + } + virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NOD= ATA); + QTAILQ_REMOVE(&g->fenceq, cmd, next); + g_free(cmd); + } + + trace_virtio_gpu_fence_resp(f->fence_id); + g_free(f); + g->inflight--; + if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { + trace_virtio_gpu_dec_inflight_fences(g->inflight); + } + } +} + +static void +virtio_gpu_virgl_push_async_fence(VirtIOGPU *g, uint32_t ctx_id, + uint32_t ring_idx, uint64_t fence_id) +{ + struct virtio_gpu_virgl_context_fence *f; + VirtIOGPUGL *gl =3D VIRTIO_GPU_GL(g); + + f =3D g_new(struct virtio_gpu_virgl_context_fence, 1); + f->ctx_id =3D ctx_id; + f->ring_idx =3D ring_idx; + f->fence_id =3D fence_id; + + QSLIST_INSERT_HEAD_ATOMIC(&gl->async_fenceq, f, next); + + qemu_bh_schedule(gl->async_fence_bh); +} + +static void virgl_write_async_fence(void *opaque, uint32_t fence) +{ + VirtIOGPU *g =3D opaque; + + virtio_gpu_virgl_push_async_fence(g, 0, UINT32_MAX, fence); +} + +static void virgl_write_async_context_fence(void *opaque, uint32_t ctx_id, + uint32_t ring_idx, uint64_t fe= nce) +{ + VirtIOGPU *g =3D opaque; + + virtio_gpu_virgl_push_async_fence(g, ctx_id, ring_idx, fence); +} +#endif + static virgl_renderer_gl_context virgl_create_context(void *opaque, int scanout_idx, struct virgl_renderer_gl_ctx_param *params) @@ -1178,6 +1292,8 @@ void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g) void virtio_gpu_virgl_reset(VirtIOGPU *g) { virgl_renderer_reset(); + + virtio_gpu_virgl_reset_async_fences(g); } =20 int virtio_gpu_virgl_init(VirtIOGPU *g) @@ -1190,6 +1306,12 @@ int virtio_gpu_virgl_init(VirtIOGPU *g) if (qemu_egl_display) { virtio_gpu_3d_cbs.version =3D 4; virtio_gpu_3d_cbs.get_egl_display =3D virgl_get_egl_display; +#if VIRGL_CHECK_VERSION(1, 1, 2) + virtio_gpu_3d_cbs.write_fence =3D virgl_write_async_fence; + virtio_gpu_3d_cbs.write_context_fence =3D virgl_write_async_contex= t_fence; + flags |=3D VIRGL_RENDERER_ASYNC_FENCE_CB; + flags |=3D VIRGL_RENDERER_THREAD_SYNC; +#endif } #endif #ifdef VIRGL_RENDERER_D3D11_SHARE_TEXTURE @@ -1221,6 +1343,9 @@ int virtio_gpu_virgl_init(VirtIOGPU *g) =20 #if VIRGL_VERSION_MAJOR >=3D 1 gl->cmdq_resume_bh =3D virtio_bh_io_new(virtio_gpu_virgl_resume_cmdq_b= h, g); +#if VIRGL_CHECK_VERSION(1, 1, 2) + gl->async_fence_bh =3D virtio_bh_io_new(virtio_gpu_virgl_async_fence_b= h, g); +#endif #endif =20 return 0; diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index 58e0f91fda65..16e9f6914f07 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -233,6 +233,13 @@ struct VirtIOGPUClass { Error **errp); }; =20 +struct virtio_gpu_virgl_context_fence { + uint32_t ctx_id; + uint32_t ring_idx; + uint64_t fence_id; + QSLIST_ENTRY(virtio_gpu_virgl_context_fence) next; +}; + /* VirtIOGPUGL renderer states */ typedef enum { RS_START, /* starting state */ @@ -250,6 +257,9 @@ struct VirtIOGPUGL { QEMUTimer *print_stats; =20 QEMUBH *cmdq_resume_bh; + + QEMUBH *async_fence_bh; + QSLIST_HEAD(, virtio_gpu_virgl_context_fence) async_fenceq; }; =20 struct VhostUserGPU { @@ -379,5 +389,6 @@ void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g); void virtio_gpu_virgl_reset(VirtIOGPU *g); int virtio_gpu_virgl_init(VirtIOGPU *g); GArray *virtio_gpu_virgl_get_capsets(VirtIOGPU *g); +void virtio_gpu_virgl_reset_async_fences(VirtIOGPU *g); =20 #endif diff --git a/meson.build b/meson.build index 0ce84d45e6f3..a8ed44d6b065 100644 --- a/meson.build +++ b/meson.build @@ -2515,6 +2515,8 @@ config_host_data.set('CONFIG_VNC_JPEG', jpeg.found()) config_host_data.set('CONFIG_VNC_SASL', sasl.found()) if virgl.found() config_host_data.set('VIRGL_VERSION_MAJOR', virgl.version().split('.')[0= ]) + config_host_data.set('VIRGL_VERSION_MINOR', virgl.version().split('.')[1= ]) + config_host_data.set('VIRGL_VERSION_MICRO', virgl.version().split('.')[2= ]) endif config_host_data.set('CONFIG_VIRTFS', have_virtfs) config_host_data.set('CONFIG_VTE', vte.found()) --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 10/18] virtio-gpu: Support DRM native context Date: Mon, 2 Mar 2026 17:59:12 +0300 Message-ID: <20260302145920.735423-11-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463857734158500 Add support for DRM native contexts to VirtIO-GPU. DRM context is enabled using a new virtio-gpu-gl device option "drm_native_context=3Don". Unlike Virgl and Venus contexts that operate on application API level, DRM native contexts work on a kernel UAPI level. This lower level results in a lightweight context implementations that yield better performance. Reviewed-by: Akihiko Odaki Acked-by: Michael S. Tsirkin Tested-by: Alex Benn=C3=A9e Acked-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Yiwei Zhang Tested-by: Yiwei Zhang Signed-off-by: Dmitry Osipenko --- docs/system/devices/virtio/virtio-gpu.rst | 11 +++++++++ hw/display/virtio-gpu-gl.c | 2 ++ hw/display/virtio-gpu-virgl.c | 28 +++++++++++++++++++++++ hw/display/virtio-gpu.c | 15 ++++++++++++ include/hw/virtio/virtio-gpu.h | 3 +++ 5 files changed, 59 insertions(+) diff --git a/docs/system/devices/virtio/virtio-gpu.rst b/docs/system/device= s/virtio/virtio-gpu.rst index 0f4bb304a9b8..086e2fcf27b9 100644 --- a/docs/system/devices/virtio/virtio-gpu.rst +++ b/docs/system/devices/virtio/virtio-gpu.rst @@ -84,6 +84,17 @@ of virtio-gpu host memory window. This is typically betw= een 256M and 8G. =20 .. _venus: https://gitlab.freedesktop.org/virgl/venus-protocol/ =20 +DRM native context is supported since release of `virglrenderer`_ v1.0.0 +using `drm`_ protocol. ``DRM`` virtio-gpu capability set ("capset") requi= res +host blob support (``hostmem`` and ``blob`` fields) and should be enabled +using ``drm_native_context`` field. The ``hostmem`` field specifies the s= ize +of virtio-gpu host memory window. This is typically between 256M and 8G. + +.. parsed-literal:: + -device virtio-gpu-gl,hostmem=3D8G,blob=3Don,drm_native_context=3Don + +.. _drm: https://gitlab.freedesktop.org/virgl/virglrenderer/-/tree/main/sr= c/drm + virtio-gpu rutabaga ------------------- =20 diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c index 3e0680880e14..b941e9a4b789 100644 --- a/hw/display/virtio-gpu-gl.c +++ b/hw/display/virtio-gpu-gl.c @@ -159,6 +159,8 @@ static const Property virtio_gpu_gl_properties[] =3D { VIRTIO_GPU_FLAG_STATS_ENABLED, false), DEFINE_PROP_BIT("venus", VirtIOGPU, parent_obj.conf.flags, VIRTIO_GPU_FLAG_VENUS_ENABLED, false), + DEFINE_PROP_BIT("drm_native_context", VirtIOGPU, parent_obj.conf.flags, + VIRTIO_GPU_FLAG_DRM_ENABLED, false), }; =20 static void virtio_gpu_gl_device_unrealize(DeviceState *qdev) diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c index d2543b04e588..8d33e4bd358c 100644 --- a/hw/display/virtio-gpu-virgl.c +++ b/hw/display/virtio-gpu-virgl.c @@ -1323,6 +1323,25 @@ int virtio_gpu_virgl_init(VirtIOGPU *g) if (virtio_gpu_venus_enabled(g->parent_obj.conf)) { flags |=3D VIRGL_RENDERER_VENUS | VIRGL_RENDERER_RENDER_SERVER; } + if (virtio_gpu_drm_enabled(g->parent_obj.conf)) { + flags |=3D VIRGL_RENDERER_DRM; + + if (!(flags & VIRGL_RENDERER_ASYNC_FENCE_CB)) { + /* + * Virglrenderer skips enabling DRM context support without + * enabled async-fence feature. VirtIO-GPU will initialize + * successfully, but DRM context won't be available in guest. + * + * For vrend async-fencing can be enabled only if EGL display + * is used. Vrend can't be disabled in QEMU, hence DRM implici= tly + * requires EGL too. + * + * Async-fence was bugged in virglrenderer versions <=3D 1.1.1. + */ + error_report("drm requires egl display and virglrenderer >=3D = 1.2.0"); + return -EINVAL; + } + } #endif =20 ret =3D virgl_renderer_init(g, flags, &virtio_gpu_3d_cbs); @@ -1382,5 +1401,14 @@ GArray *virtio_gpu_virgl_get_capsets(VirtIOGPU *g) } } =20 + if (virtio_gpu_drm_enabled(g->parent_obj.conf)) { + virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_DRM, + &capset_max_ver, + &capset_max_size); + if (capset_max_size) { + virtio_gpu_virgl_add_capset(capset_ids, VIRTIO_GPU_CAPSET_DRM); + } + } + return capset_ids; } diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index 0d88e7b3cdff..07dcf767115a 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -1517,6 +1517,21 @@ void virtio_gpu_device_realize(DeviceState *qdev, Er= ror **errp) #endif } =20 + if (virtio_gpu_drm_enabled(g->parent_obj.conf)) { +#ifdef VIRGL_VERSION_MAJOR + #if VIRGL_VERSION_MAJOR >=3D 1 + if (!virtio_gpu_blob_enabled(g->parent_obj.conf) || + !virtio_gpu_hostmem_enabled(g->parent_obj.conf)) { + error_setg(errp, "drm requires enabled blob and hostmem option= s"); + return; + } + #else + error_setg(errp, "old virglrenderer, drm unsupported"); + return; + #endif +#endif + } + if (!virtio_gpu_base_device_realize(qdev, virtio_gpu_handle_ctrl_cb, virtio_gpu_handle_cursor_cb, diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index 16e9f6914f07..718332284305 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -100,6 +100,7 @@ enum virtio_gpu_base_conf_flags { VIRTIO_GPU_FLAG_RUTABAGA_ENABLED, VIRTIO_GPU_FLAG_VENUS_ENABLED, VIRTIO_GPU_FLAG_RESOURCE_UUID_ENABLED, + VIRTIO_GPU_FLAG_DRM_ENABLED, }; =20 #define virtio_gpu_virgl_enabled(_cfg) \ @@ -122,6 +123,8 @@ enum virtio_gpu_base_conf_flags { (_cfg.hostmem > 0) #define virtio_gpu_venus_enabled(_cfg) \ (_cfg.flags & (1 << VIRTIO_GPU_FLAG_VENUS_ENABLED)) +#define virtio_gpu_drm_enabled(_cfg) \ + (_cfg.flags & (1 << VIRTIO_GPU_FLAG_DRM_ENABLED)) =20 struct virtio_gpu_base_conf { uint32_t max_outputs; --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 11/18] docs/system: virtio-gpu: Add link to Mesa VirGL doc Date: Mon, 2 Mar 2026 17:59:13 +0300 Message-ID: <20260302145920.735423-12-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463845588158500 Content-Type: text/plain; charset="utf-8" Extend virtio-gpu documentation with a link to the Mesa VirGL documentation. Suggested-by: Akihiko Odaki Reviewed-by: Akihiko Odaki Acked-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Yiwei Zhang Signed-off-by: Dmitry Osipenko --- docs/system/devices/virtio/virtio-gpu.rst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/docs/system/devices/virtio/virtio-gpu.rst b/docs/system/device= s/virtio/virtio-gpu.rst index 086e2fcf27b9..89153103b9f8 100644 --- a/docs/system/devices/virtio/virtio-gpu.rst +++ b/docs/system/devices/virtio/virtio-gpu.rst @@ -61,7 +61,7 @@ on typical modern Linux distributions. virtio-gpu virglrenderer ------------------------ =20 -When using virgl accelerated graphics mode in the guest, OpenGL API calls +When using `virgl`_ accelerated graphics mode in the guest, OpenGL API cal= ls are translated into an intermediate representation (see `Gallium3D`_). The intermediate representation is communicated to the host and the `virglrenderer`_ library on the host translates the intermediate @@ -70,6 +70,7 @@ representation back to OpenGL API calls. .. parsed-literal:: -device virtio-gpu-gl =20 +.. _virgl: https://docs.mesa3d.org/drivers/virgl.html .. _Gallium3D: https://www.freedesktop.org/wiki/Software/gallium/ .. _virglrenderer: https://gitlab.freedesktop.org/virgl/virglrenderer/ =20 --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass(p=none dis=none) header.from=collabora.com ARC-Seal: i=2; a=rsa-sha256; t=1772463898; cv=pass; d=zohomail.com; s=zohoarc; b=WARuh62r79/RGwvHwm7ICyxg9EQFUKyKVQgUaEWOzARMnmh4F0/uAPXxFBJvEnLxIzidUDs6DJ+TeZyLP1M0W+VEo+pWpB4y1SrN+l6cQT4jyzMWS/0h4UWQZdpzFtrrn3bqU2pnBCby9tbKm+kme4HMhy69YzDsum4Z/XAQRw8= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463898; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=oaWO7r3ZwyrUipxkB+Cc9t0DxxgtoB+INwfQ+jZ8B+M=; b=f1lHE72sek8CKKBEjUJKyme2S5ZOwnLbhBAP6mX9EbCBNSnsgCKwvm6UZMxk4REgxz8YpS0sxqUluJRA1c+hbipDiKfESij/+WZ7O0k2wzRAOgPMEkFcwbCNxRc/D7K4Z+65vE3//Dx50mSVZ0WTCzJudO/514jh/u4QnEKkxfY= ARC-Authentication-Results: i=2; mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1772463898837426.35262193719325; Mon, 2 Mar 2026 07:04:58 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vx4oj-0007ix-AK; Mon, 02 Mar 2026 10:04:17 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vx4mP-0004tT-Rg for qemu-devel@nongnu.org; Mon, 02 Mar 2026 10:01:55 -0500 Received: from sender4-pp-f112.zoho.com ([136.143.188.112]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vx4mL-00049N-KU for qemu-devel@nongnu.org; Mon, 02 Mar 2026 10:01:53 -0500 Received: by mx.zohomail.com with SMTPS id 1772463681678539.1400288037179; Mon, 2 Mar 2026 07:01:21 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1772463683; cv=none; d=zohomail.com; s=zohoarc; b=XydG/7LHM38xQeSIplYlh3O3rs1xkQJDsZLxi/rouiH8kjFMz2aBCqW0FlHBBiLU2rDVjVjt3flHz01UACCKWf5ClKq5DaPntm9Aaqwd/EUzvcsxf+a+SbaVAcmq1JED6/ZRcpikQE1ZF2knYDNydAG/ehj8L9LXVDqeSTmEzZU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463683; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=oaWO7r3ZwyrUipxkB+Cc9t0DxxgtoB+INwfQ+jZ8B+M=; b=FLt4HIwMuubAa/KAqeYvXhSnkjxnx8X3R+vt46FB2hjEuJd5q8LXQOSFH2NG75LXqQp6ZBXSOwUABgJMwcLFo3tzgg6O06cO5tqNiUGDDZPpqjhq8uGdA2ClXCtMpJHD2wvByZUMGvYzhSi2vVQA6SdfYDfdCddVa/AP2WbHx1c= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=dmitry.osipenko@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1772463683; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Message-Id:Reply-To; bh=oaWO7r3ZwyrUipxkB+Cc9t0DxxgtoB+INwfQ+jZ8B+M=; b=YXMp0zAJ5hph4NeELvTgNEuqE0YmKr4j3DZLE21qv9nkrN4+URMYnguD6gh0Hv/7 /1u2HOkf+38Ay5jSF+nB57gadc1SMtZXvdRoWjWwsPRAddp2I7cJ4iQjt3+7SnhMNS1 Zy6d9hbBsKKWjUQgQUdqeRU1AQcDnQYlwVkXeukA= From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Pierre-Eric Pelloux-Prayer , "Michael S . Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 12/18] docs/system: virtio-gpu: Update Venus link Date: Mon, 2 Mar 2026 17:59:14 +0300 Message-ID: <20260302145920.735423-13-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463900250158500 Content-Type: text/plain; charset="utf-8" Change virtio-gpu Venus link, pointing it at the Mesa Venus documentation instead of the protocol. The Mesa doc provides more information and also has a link to the protocol. Suggested-by: Akihiko Odaki Reviewed-by: Akihiko Odaki Acked-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Yiwei Zhang Signed-off-by: Dmitry Osipenko --- docs/system/devices/virtio/virtio-gpu.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/system/devices/virtio/virtio-gpu.rst b/docs/system/device= s/virtio/virtio-gpu.rst index 89153103b9f8..ef5fb0401d5d 100644 --- a/docs/system/devices/virtio/virtio-gpu.rst +++ b/docs/system/devices/virtio/virtio-gpu.rst @@ -83,7 +83,7 @@ of virtio-gpu host memory window. This is typically betwe= en 256M and 8G. .. parsed-literal:: -device virtio-gpu-gl,hostmem=3D8G,blob=3Dtrue,venus=3Dtrue =20 -.. _venus: https://gitlab.freedesktop.org/virgl/venus-protocol/ +.. _venus: https://docs.mesa3d.org/drivers/venus.html =20 DRM native context is supported since release of `virglrenderer`_ v1.0.0 using `drm`_ protocol. ``DRM`` virtio-gpu capability set ("capset") requi= res --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass(p=none dis=none) header.from=collabora.com ARC-Seal: i=2; a=rsa-sha256; t=1772463845; cv=pass; d=zohomail.com; s=zohoarc; b=jQ/EgrhxcYjljuWci2Ek0h4sABpEIMCanh4AicTT+2KKqm0D9CMRfAUm3mqgplwDkZfUUw7hkCVqWCiSt6QDSBAPRWGdyxuw2f0QYnhbMUCZ31TfVoDuSK9zq+f/D52aIzAhF3/Nv0vq10LkyS8Z7FeHxIBSvFdTBo9KKWJMHaM= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463845; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=LP0NMKJP0ZJsg3D6W1P93gHQbeBA3DA9ntBuX3+Brh4=; b=DWzpCKJUnpnp4pbX7oTT/gpK/DM/BI8Kr8bD4xEhlY3T98R6GdSxQVFC7lb8idMSYxMWvzsjPiPsVYERwVzYHHH85eKQVpEaXTZqZSNsAYncmnVjRoqm4FWOUyl+5yvLDdwB0SH2DaMtbr5w9r8jxIR8HQtmB+hLCPIry+VGXOg= ARC-Authentication-Results: i=2; mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1772463845800758.8420709074488; Mon, 2 Mar 2026 07:04:05 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vx4oL-0006bK-Mi; Mon, 02 Mar 2026 10:03:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vx4mQ-0004tl-Gp for qemu-devel@nongnu.org; Mon, 02 Mar 2026 10:01:55 -0500 Received: from sender4-pp-f112.zoho.com ([136.143.188.112]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vx4mO-0004AI-Gi for qemu-devel@nongnu.org; Mon, 02 Mar 2026 10:01:54 -0500 Received: by mx.zohomail.com with SMTPS id 1772463687494466.88479333232567; Mon, 2 Mar 2026 07:01:27 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1772463689; cv=none; d=zohomail.com; s=zohoarc; b=IKLIk+Yi5K3+6xl1ObeBtAdlPHlZ3NmwkuvNIRTPXYyqjhJisW4t0yyqua5IOe8VvEsGlGQWNu3Zl7NUPSkQ0Dady43jOZEa1deqfC13yqwHDp5GCxQbnRARvz8lQlE5ZxdVfN+/++TqKZ5rysGwcaSnb91nbzFHZ2EHDvCSWzk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463689; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=LP0NMKJP0ZJsg3D6W1P93gHQbeBA3DA9ntBuX3+Brh4=; b=GGLSKiVnhFjRp66OHwsxeFscYsKsLTUV+RdWvgYQuYvvJEbHE3Cdn8E4YICHTQxX5Z6BRTYb6NP9kSIc7DDfI/oq8v8LAOC8hCWS2Y557R/s4ZzuNFMcJ/UGM+PoEY6KUC2QR9IlL3yX4nEQnZx6NkUbTiVgfJTF9ZnRtmXhl/g= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=dmitry.osipenko@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1772463689; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=LP0NMKJP0ZJsg3D6W1P93gHQbeBA3DA9ntBuX3+Brh4=; b=ag8oK6LntClFJawlSfmP/0+ZcrncoNtuHksA5oLj13/euIq7B83/MoewBwPJyA0Q si96dNkcLQpHEGq/2gnEHk+Muwa9dofaUrp5Gu+Gmxmvn+1B1mOxlAlb/yfPzy+SR7/ sEF3mQtAXU0eAlzYSo5ZZbJRh2V8w8dO163gAVGc= From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Pierre-Eric Pelloux-Prayer , "Michael S . Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 13/18] docs/system: virtio-gpu: Document host/guest requirements Date: Mon, 2 Mar 2026 17:59:15 +0300 Message-ID: <20260302145920.735423-14-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463847626158500 From: Alex Benn=C3=A9e This attempts to tidy up the VirtIO GPU documentation to make the list of requirements clearer. There are still a lot of moving parts and the distros have some catching up to do before this is all handled automatically. Signed-off-by: Alex Benn=C3=A9e Cc: Sergio Lopez Pascual Reviewed-by: Akihiko Odaki Acked-by: Pierre-Eric Pelloux-Prayer Reviewed-by: Yiwei Zhang Signed-off-by: Dmitry Osipenko [dmitry.osipenko@collabora.com: Extended and corrected doc] --- docs/system/devices/virtio/virtio-gpu.rst | 105 +++++++++++++++++++++- 1 file changed, 102 insertions(+), 3 deletions(-) diff --git a/docs/system/devices/virtio/virtio-gpu.rst b/docs/system/device= s/virtio/virtio-gpu.rst index ef5fb0401d5d..d05f8cb8e3f9 100644 --- a/docs/system/devices/virtio/virtio-gpu.rst +++ b/docs/system/devices/virtio/virtio-gpu.rst @@ -7,14 +7,28 @@ VirtIO GPU =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 This document explains the setup and usage of the virtio-gpu device. -The virtio-gpu device paravirtualizes the GPU and display controller. +The virtio-gpu device provides a GPU and display controller +paravirtualized using VirtIO. It supports a number of different modes +from simple 2D displays to fully accelerated 3D graphics. =20 -Linux kernel support --------------------- +Linux guest kernel support +-------------------------- =20 virtio-gpu requires a guest Linux kernel built with the ``CONFIG_DRM_VIRTIO_GPU`` option. =20 +3D acceleration +--------------- + +3D acceleration of a virtualized GPU is still an evolving field. +Depending on the 3D mode you are running you may need to override +distribution supplied libraries with more recent versions or enable +build options. There are a number of requirements the host must meet +to be able to be able to support guests. QEMU must be able to access the +host's GPU and for the best performance be able to reliably share GPU +memory with the guest. Details of 3D acceleration requirements are +described in a further sections. + QEMU virtio-gpu variants ------------------------ =20 @@ -67,8 +81,14 @@ intermediate representation is communicated to the host = and the `virglrenderer`_ library on the host translates the intermediate representation back to OpenGL API calls. =20 +By default OpenGL version on guest is limited to 4.3. In order to enable +OpenGL 4.6 support, virtio-gpu host blobs feature (``hostmem`` and ``blob= `` +fields) should be enabled. The ``hostmem`` field specifies the size of +virtio-gpu host memory window. This is typically between 256M and 8G. + .. parsed-literal:: -device virtio-gpu-gl + -device virtio-gpu-gl,hostmem=3D8G,blob=3Dtrue =20 .. _virgl: https://docs.mesa3d.org/drivers/virgl.html .. _Gallium3D: https://www.freedesktop.org/wiki/Software/gallium/ @@ -96,6 +116,67 @@ of virtio-gpu host memory window. This is typically bet= ween 256M and 8G. =20 .. _drm: https://gitlab.freedesktop.org/virgl/virglrenderer/-/tree/main/sr= c/drm =20 +.. list-table:: Linux Host Requirements + :header-rows: 1 + + * - Capability + - Kernel Version + - Libvirglrenderer Version + * - OpenGL pass-through + - Any Linux version compatible with QEMU if not using host blobs featu= re, + Linux 6.13+ otherwise + - 0.8.2+ + * - Vulkan pass-through + - Linux 6.13+ + - 1.0.0+ + * - AMDGPU DRM native context + - Linux 6.13+ + - 1.1.0+ + * - Freedreno DRM native context + - Linux 6.4+ + - 1.0.0+ + * - Intel i915 DRM native context + - Linux 6.13+ + - 1.3.0+ + * - Asahi DRM native context + - `Downstream version`_ of Asahi Linux kernel + - 1.2.0+ + * - Panfrost native context + - Linux 6.13+ + - 1.3.0+ + +.. _Downstream version: https://github.com/AsahiLinux/linux + +.. list-table:: Linux Guest Requirements + :header-rows: 1 + + * - Capability + - Kernel Version + - Mesa Version + * - OpenGL pass-through + - Any Linux version supporting virtio-gpu + - 16.0.0+ + * - Vulkan pass-through + - Linux 5.16+ + - 24.2.0+ + * - AMDGPU DRM native context + - Linux 6.14+ + - 25.0.0+ + * - Freedreno DRM native context + - Linux 6.14+ + - 23.1.0+ + * - Intel i915 DRM native context + - Linux 6.14+ + - 26.1.0+ + * - Asahi DRM native context + - Linux 6.14+ + - 24.2.0+ + * - Panfrost native context + - Linux 6.14+ + - `mr36814`_ + +.. _mr36814: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/368= 14 + virtio-gpu rutabaga ------------------- =20 @@ -135,3 +216,21 @@ Surfaceless is the default if ``wsi`` is not specified. .. _Wayland display passthrough: https://www.youtube.com/watch?v=3DOZJiHMt= IQ2M .. _gfxstream-enabled rutabaga: https://crosvm.dev/book/appendix/rutabaga_= gfx.html .. _guest Wayland proxy: https://crosvm.dev/book/devices/wayland.html + +.. list-table:: Linux Host Requirements + :header-rows: 1 + + * - Capability + - Kernel Version + * - Vulkan+Wayland pass-through + - Linux 6.13+ + +.. list-table:: Linux Guest Requirements + :header-rows: 1 + + * - Capability + - Kernel Version + - Mesa Version + * - Vulkan+Wayland pass-through + - Linux 5.16+ + - 24.3.0+ --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 14/18] virtio-gpu: Remove superfluous memory_region_set_enabled() Date: Mon, 2 Mar 2026 17:59:16 +0300 Message-ID: <20260302145920.735423-15-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463934301158500 There is no need to explicitly enable/disable memory region when it's added or deleted respectively. Remove superfluous set_enabled() calls for consistency. Suggested-by: Akihiko Odaki Reviewed-by: Akihiko Odaki Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Dmitry Osipenko --- hw/display/virtio-gpu-virgl.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c index 8d33e4bd358c..500e6b0ddb50 100644 --- a/hw/display/virtio-gpu-virgl.c +++ b/hw/display/virtio-gpu-virgl.c @@ -171,7 +171,6 @@ virtio_gpu_virgl_map_resource_blob(VirtIOGPU *g, mr =3D &vmr->mr; memory_region_init_ram_ptr(mr, OBJECT(vmr), "mr", size, data); memory_region_add_subregion(&b->hostmem, offset, mr); - memory_region_set_enabled(mr, true); =20 res->mr =3D mr; =20 @@ -225,7 +224,6 @@ virtio_gpu_virgl_unmap_resource_blob(VirtIOGPU *g, b->renderer_blocked++; =20 /* memory region owns self res->mr object and frees it by itself */ - memory_region_set_enabled(mr, false); memory_region_del_subregion(&b->hostmem, mr); object_unparent(OBJECT(vmr)); } --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1772463703; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Message-Id:Reply-To; bh=mAtHKD4w705o/SW8/42x/ePgTgfhOQt0zB/VSc3hcGA=; b=Vr2TYdVAu5x9do2fCZFirT8dkqYKPH/ZBEoZHnJK8iLM5KcSc+4H17OVrL8Os8Hj evQ/wL8afjY70kRi3XeQ3Sk5Z1ST993H+cvYgnSA8D0ICBd6dNUit5o9Gi9c2FABE+O X/Ae80MqYuJxRbry4a14ajTvAsSWhttdG6dsLicY= From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Pierre-Eric Pelloux-Prayer , "Michael S . Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 15/18] virtio-gpu: Validate hostmem mapping offset Date: Mon, 2 Mar 2026 17:59:17 +0300 Message-ID: <20260302145920.735423-16-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463867712158500 Content-Type: text/plain; charset="utf-8" Check hostmem mapping boundaries originated from guest. Suggested-by: Akihiko Odaki Reviewed-by: Akihiko Odaki Signed-off-by: Dmitry Osipenko --- hw/display/virtio-gpu-virgl.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c index 500e6b0ddb50..74cbd0f32120 100644 --- a/hw/display/virtio-gpu-virgl.c +++ b/hw/display/virtio-gpu-virgl.c @@ -791,6 +791,7 @@ static void virgl_cmd_resource_map_blob(VirtIOGPU *g, struct virtio_gpu_resource_map_blob mblob; struct virtio_gpu_virgl_resource *res; struct virtio_gpu_resp_map_info resp; + VirtIOGPUBase *b =3D VIRTIO_GPU_BASE(g); int ret; =20 VIRTIO_GPU_FILL_CMD(mblob); @@ -804,6 +805,15 @@ static void virgl_cmd_resource_map_blob(VirtIOGPU *g, return; } =20 + if (mblob.offset + res->base.blob_size > b->conf.hostmem || + mblob.offset + res->base.blob_size < mblob.offset) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: failed to map virgl resource: invalid offset\n", + __func__); + cmd->error =3D VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; + return; + } + ret =3D virtio_gpu_virgl_map_resource_blob(g, res, mblob.offset); if (ret) { cmd->error =3D VIRTIO_GPU_RESP_ERR_UNSPEC; --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass(p=none dis=none) header.from=collabora.com ARC-Seal: i=2; a=rsa-sha256; t=1772463888; cv=pass; d=zohomail.com; s=zohoarc; b=At6qKxgrei8je2vYRcetABOjyYP8D5AMcZl8UGB8NrjVMlgjpYgFTHdQfBGudvOBUgues47F0C40OjWyYfbaakMcyYXI+7tbhpWnxrGLwe7cDr9jqNmsqST66acazPFw5wlPoxTEp58str++Q2HSVhDA+o7ekmIe6N+PjOFalzU= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463888; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 16/18] virtio-gpu: Replace finish_unmapping with mapping_state Date: Mon, 2 Mar 2026 17:59:18 +0300 Message-ID: <20260302145920.735423-17-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463889996158500 Content-Type: text/plain; charset="utf-8" Allow virtio_gpu_virgl_unmap_resource_blob() to be invoked while async unmapping is in progress. Do it in preparation to improvement of virtio-gpu resetting that will require this change. Suggested-by: Akihiko Odaki Reviewed-by: Akihiko Odaki Signed-off-by: Dmitry Osipenko --- hw/display/trace-events | 2 +- hw/display/virtio-gpu-virgl.c | 28 ++++++++++++++++++++++------ 2 files changed, 23 insertions(+), 7 deletions(-) diff --git a/hw/display/trace-events b/hw/display/trace-events index e323a82cff24..4bfc457fbac1 100644 --- a/hw/display/trace-events +++ b/hw/display/trace-events @@ -39,7 +39,7 @@ virtio_gpu_cmd_res_create_2d(uint32_t res, uint32_t fmt, = uint32_t w, uint32_t h) virtio_gpu_cmd_res_create_3d(uint32_t res, uint32_t fmt, uint32_t w, uint3= 2_t h, uint32_t d) "res 0x%x, fmt 0x%x, w %d, h %d, d %d" virtio_gpu_cmd_res_create_blob(uint32_t res, uint64_t size) "res 0x%x, siz= e %" PRId64 virtio_gpu_cmd_res_map_blob(uint32_t res, void *vmr, void *mr) "res 0x%x, = vmr %p, mr %p" -virtio_gpu_cmd_res_unmap_blob(uint32_t res, void *mr, bool finish_unmappin= g) "res 0x%x, mr %p, finish_unmapping %d" +virtio_gpu_cmd_res_unmap_blob(uint32_t res, void *mr, int mapping_state) "= res 0x%x, mr %p, mapping_state %d" virtio_gpu_cmd_res_unref(uint32_t res) "res 0x%x" virtio_gpu_cmd_res_back_attach(uint32_t res) "res 0x%x" virtio_gpu_cmd_res_back_detach(uint32_t res) "res 0x%x" diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c index 74cbd0f32120..ddd0cfa5e9d8 100644 --- a/hw/display/virtio-gpu-virgl.c +++ b/hw/display/virtio-gpu-virgl.c @@ -68,11 +68,17 @@ virgl_get_egl_display(G_GNUC_UNUSED void *cookie) #endif =20 #if VIRGL_VERSION_MAJOR >=3D 1 +enum virtio_gpu_virgl_hostmem_region_mapping_state { + VIRTIO_GPU_MR_MAPPED, + VIRTIO_GPU_MR_UNMAP_STARTED, + VIRTIO_GPU_MR_UNMAP_COMPLETED, +}; + struct virtio_gpu_virgl_hostmem_region { Object parent_obj; MemoryRegion mr; struct VirtIOGPU *g; - bool finish_unmapping; + enum virtio_gpu_virgl_hostmem_region_mapping_state mapping_state; }; =20 #define TYPE_VIRTIO_GPU_VIRGL_HOSTMEM_REGION "virtio-gpu-virgl-hostmem-reg= ion" @@ -109,7 +115,7 @@ static void virtio_gpu_virgl_hostmem_region_finalize(Ob= ject *obj) return; } =20 - vmr->finish_unmapping =3D true; + vmr->mapping_state =3D VIRTIO_GPU_MR_UNMAP_COMPLETED; =20 b =3D VIRTIO_GPU_BASE(vmr->g); b->renderer_blocked--; @@ -167,6 +173,7 @@ virtio_gpu_virgl_map_resource_blob(VirtIOGPU *g, object_initialize_child(OBJECT(g), name, vmr, TYPE_VIRTIO_GPU_VIRGL_HOSTMEM_REGION); vmr->g =3D g; + vmr->mapping_state =3D VIRTIO_GPU_MR_MAPPED; =20 mr =3D &vmr->mr; memory_region_init_ram_ptr(mr, OBJECT(vmr), "mr", size, data); @@ -195,7 +202,8 @@ virtio_gpu_virgl_unmap_resource_blob(VirtIOGPU *g, =20 vmr =3D to_hostmem_region(res->mr); =20 - trace_virtio_gpu_cmd_res_unmap_blob(res->base.resource_id, mr, vmr->fi= nish_unmapping); + trace_virtio_gpu_cmd_res_unmap_blob(res->base.resource_id, mr, + vmr->mapping_state); =20 /* * Perform async unmapping in 3 steps: @@ -206,7 +214,8 @@ virtio_gpu_virgl_unmap_resource_blob(VirtIOGPU *g, * asynchronously by virtio_gpu_virgl_hostmem_region_finalize(). * 3. Finish the unmapping with final virgl_renderer_resource_unmap(). */ - if (vmr->finish_unmapping) { + switch (vmr->mapping_state) { + case VIRTIO_GPU_MR_UNMAP_COMPLETED: res->mr =3D NULL; g_free(vmr); =20 @@ -217,15 +226,22 @@ virtio_gpu_virgl_unmap_resource_blob(VirtIOGPU *g, __func__, strerror(-ret)); return ret; } - } else { - *cmd_suspended =3D true; + break; =20 + case VIRTIO_GPU_MR_MAPPED: /* render will be unblocked once MR is freed */ b->renderer_blocked++; =20 + vmr->mapping_state =3D VIRTIO_GPU_MR_UNMAP_STARTED; + /* memory region owns self res->mr object and frees it by itself */ memory_region_del_subregion(&b->hostmem, mr); object_unparent(OBJECT(vmr)); + + /* Fallthrough */ + case VIRTIO_GPU_MR_UNMAP_STARTED: + *cmd_suspended =3D true; + break; } =20 return 0; --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass(p=none dis=none) header.from=collabora.com ARC-Seal: i=2; a=rsa-sha256; t=1772463878; cv=pass; d=zohomail.com; s=zohoarc; b=EsXrGnSb1xD34Q7HGlfHD0M7AygwG68YriH0X88f8EvhmBjiSAXq32y5/r1SSdI+NhJ3QcuiNMxPZNinVWJ0uBULq/3gANZCukIlaqFYiHgf3GfXZb2+vijpdmxYFpWSrO9GFaAT97xZiDPh6iIe+7ddkGDTRj+JfipgTMpzkJQ= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463878; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=Qd36kR1jV6fNbEofbH26jxGtVfQtsvtqjH0LmlFyCJY=; b=TIBSuafvHiRSWB+l/VOWgFE+GXWhXTk/oI4b2CsulwvE8XfZeGFZAoQeltMoz3BIAlAFPz8lYsALoaWryjZGkJWrWJzWJHydRZHuqWrCxmEDp+S/6Ji8RgYBIPKiMJSBwSYd6U3+MeRuBBItWS09SEU2BULgTtfHzt8UrVifqtM= ARC-Authentication-Results: i=2; mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1772463878064214.77099150394724; Mon, 2 Mar 2026 07:04:38 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vx4oj-0007nV-DM; Mon, 02 Mar 2026 10:04:19 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vx4mm-0005Gs-QZ for qemu-devel@nongnu.org; Mon, 02 Mar 2026 10:02:22 -0500 Received: from sender4-pp-f112.zoho.com ([136.143.188.112]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vx4mk-0004Cq-TJ for qemu-devel@nongnu.org; Mon, 02 Mar 2026 10:02:16 -0500 Received: by mx.zohomail.com with SMTPS id 1772463712188731.093771044364; Mon, 2 Mar 2026 07:01:52 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1772463713; cv=none; d=zohomail.com; s=zohoarc; b=aG2ygItNCAKkxV/4LY6FIEbDugeULeIwSVN2JbAQE6ZNzjAUBx5XEixGe+9l7oMDT1M/mlZ+CyuAYKQZySz5a7DLY3Dt2sZl+RA92e7Hl1z2xOfzirD1XwxuJA5ismUj6en9+vKc8XQBMkaR8V8+t7kJWL/nlI2qkAVJUa0xzQo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772463713; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=Qd36kR1jV6fNbEofbH26jxGtVfQtsvtqjH0LmlFyCJY=; b=FO0YuDySAEzN1OfV1SIZrAQwsJPze3zfZpPVpm8v8bYUt/Z7C1o1gpz5YfL1WD52O0AfwfDmos8WaCBVJlUN8PLVJGMtqhLml3sYxv1dvAwXjuZ+aLkPr3hyYU8g9+Pk1b2M3jEs4Bzreje7nPrDvj5dVvq9B9Gyr7L2glsrcG8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=dmitry.osipenko@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1772463713; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Message-Id:Reply-To; bh=Qd36kR1jV6fNbEofbH26jxGtVfQtsvtqjH0LmlFyCJY=; b=jMDaHUclOOLhs6qMmNfNYqiyx0baaLVOqwBolzyvPBa7rJY6QRZwbfaeQuv0om/i QYDDuN0cLw1cjlhhHaBE2j1qMgH/kr2dFWEdA0jYbr/nYW/n/fF3eFBmONVAOZ78V8s uoFqUNGPprRFFMSL5nSmTf81OGyU66bAaUi4abS0= From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Pierre-Eric Pelloux-Prayer , "Michael S . Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 17/18] virtio-gpu: Destroy virgl resources on virtio-gpu reset Date: Mon, 2 Mar 2026 17:59:19 +0300 Message-ID: <20260302145920.735423-18-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463879822158500 Content-Type: text/plain; charset="utf-8" Properly destroy virgl resources on virtio-gpu reset to not leak resources on a hot reboot of a VM. Suggested-by: Akihiko Odaki Reviewed-by: Akihiko Odaki Signed-off-by: Dmitry Osipenko --- hw/display/virtio-gpu-gl.c | 18 +---- hw/display/virtio-gpu-virgl.c | 123 +++++++++++++++++++++++++++------ include/hw/virtio/virtio-gpu.h | 6 +- 3 files changed, 107 insertions(+), 40 deletions(-) diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c index b941e9a4b789..8b71dd6fc26f 100644 --- a/hw/display/virtio-gpu-gl.c +++ b/hw/display/virtio-gpu-gl.c @@ -63,29 +63,14 @@ static void virtio_gpu_gl_flushed(VirtIOGPUBase *b) static void virtio_gpu_gl_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) { VirtIOGPU *g =3D VIRTIO_GPU(vdev); - VirtIOGPUGL *gl =3D VIRTIO_GPU_GL(vdev); struct virtio_gpu_ctrl_command *cmd; =20 if (!virtio_queue_ready(vq)) { return; } =20 - switch (gl->renderer_state) { - case RS_RESET: - virtio_gpu_virgl_reset(g); - /* fallthrough */ - case RS_START: - if (virtio_gpu_virgl_init(g)) { - gl->renderer_state =3D RS_INIT_FAILED; - return; - } - - gl->renderer_state =3D RS_INITED; - break; - case RS_INIT_FAILED: + if (!virtio_gpu_virgl_update_render_state(g)) { return; - case RS_INITED: - break; } =20 cmd =3D virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); @@ -201,6 +186,7 @@ static void virtio_gpu_gl_class_init(ObjectClass *klass= , const void *data) vgc->process_cmd =3D virtio_gpu_virgl_process_cmd; vgc->update_cursor_data =3D virtio_gpu_gl_update_cursor_data; =20 + vgc->resource_destroy =3D virtio_gpu_virgl_resource_destroy; vdc->realize =3D virtio_gpu_gl_device_realize; vdc->unrealize =3D virtio_gpu_gl_device_unrealize; vdc->reset =3D virtio_gpu_gl_reset; diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c index ddd0cfa5e9d8..89c11c142c25 100644 --- a/hw/display/virtio-gpu-virgl.c +++ b/hw/display/virtio-gpu-virgl.c @@ -96,6 +96,10 @@ static void virtio_gpu_virgl_resume_cmdq_bh(void *opaque) { VirtIOGPU *g =3D opaque; =20 + if (!virtio_gpu_virgl_update_render_state(g)) { + return; + } + virtio_gpu_process_cmdq(g); } =20 @@ -344,14 +348,46 @@ static void virgl_cmd_create_resource_3d(VirtIOGPU *g, virgl_renderer_resource_create(&args, NULL, 0); } =20 +static int +virtio_gpu_virgl_resource_unref(VirtIOGPU *g, + struct virtio_gpu_virgl_resource *res, + bool *suspended) +{ + struct iovec *res_iovs =3D NULL; + int num_iovs =3D 0; +#if VIRGL_VERSION_MAJOR >=3D 1 + int ret; + + ret =3D virtio_gpu_virgl_unmap_resource_blob(g, res, suspended); + if (ret) { + return ret; + } + if (*suspended) { + return 0; + } +#endif + + virgl_renderer_resource_detach_iov(res->base.resource_id, + &res_iovs, + &num_iovs); + if (res_iovs !=3D NULL && num_iovs !=3D 0) { + virtio_gpu_cleanup_mapping_iov(g, res_iovs, num_iovs); + } + virgl_renderer_resource_unref(res->base.resource_id); + + QTAILQ_REMOVE(&g->reslist, &res->base, next); + + g_free(res); + + return 0; +} + static void virgl_cmd_resource_unref(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd, bool *cmd_suspended) { struct virtio_gpu_resource_unref unref; struct virtio_gpu_virgl_resource *res; - struct iovec *res_iovs =3D NULL; - int num_iovs =3D 0; =20 VIRTIO_GPU_FILL_CMD(unref); trace_virtio_gpu_cmd_res_unref(unref.resource_id); @@ -364,27 +400,21 @@ static void virgl_cmd_resource_unref(VirtIOGPU *g, return; } =20 -#if VIRGL_VERSION_MAJOR >=3D 1 - if (virtio_gpu_virgl_unmap_resource_blob(g, res, cmd_suspended)) { - cmd->error =3D VIRTIO_GPU_RESP_ERR_UNSPEC; - return; - } - if (*cmd_suspended) { - return; - } -#endif + virtio_gpu_virgl_resource_unref(g, res, cmd_suspended); +} =20 - virgl_renderer_resource_detach_iov(unref.resource_id, - &res_iovs, - &num_iovs); - if (res_iovs !=3D NULL && num_iovs !=3D 0) { - virtio_gpu_cleanup_mapping_iov(g, res_iovs, num_iovs); - } - virgl_renderer_resource_unref(unref.resource_id); +void virtio_gpu_virgl_resource_destroy(VirtIOGPU *g, + struct virtio_gpu_simple_resource *= base, + Error **errp) +{ + struct virtio_gpu_virgl_resource *res; + bool suspended =3D false; =20 - QTAILQ_REMOVE(&g->reslist, &res->base, next); + res =3D container_of(base, struct virtio_gpu_virgl_resource, base); =20 - g_free(res); + if (virtio_gpu_virgl_resource_unref(g, res, &suspended)) { + error_setg(errp, "failed to destroy virgl resource"); + } } =20 static void virgl_cmd_context_create(VirtIOGPU *g, @@ -1291,6 +1321,10 @@ static void virtio_gpu_fence_poll(void *opaque) VirtIOGPU *g =3D opaque; VirtIOGPUGL *gl =3D VIRTIO_GPU_GL(g); =20 + if (!virtio_gpu_virgl_update_render_state(g)) { + return; + } + virgl_renderer_poll(); virtio_gpu_process_cmdq(g); if (!QTAILQ_EMPTY(&g->cmdq) || !QTAILQ_EMPTY(&g->fenceq)) { @@ -1313,14 +1347,30 @@ void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g) } } =20 -void virtio_gpu_virgl_reset(VirtIOGPU *g) +static bool virtio_gpu_virgl_reset(VirtIOGPU *g) { + struct virtio_gpu_simple_resource *res, *tmp; + + /* + * Virgl blob resource unmapping can be suspended and + * deferred on unref, ensure that destruction is completed. + */ + QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) { + virtio_gpu_virgl_resource_destroy(g, res, NULL); + } + + if (!QTAILQ_EMPTY(&g->reslist)) { + return false; + } + virgl_renderer_reset(); =20 virtio_gpu_virgl_reset_async_fences(g); + + return true; } =20 -int virtio_gpu_virgl_init(VirtIOGPU *g) +static int virtio_gpu_virgl_init(VirtIOGPU *g) { int ret; uint32_t flags =3D 0; @@ -1394,6 +1444,35 @@ int virtio_gpu_virgl_init(VirtIOGPU *g) return 0; } =20 +bool virtio_gpu_virgl_update_render_state(VirtIOGPU *g) +{ + VirtIOGPUGL *gl =3D VIRTIO_GPU_GL(g); + + switch (gl->renderer_state) { + case RS_RESET: + virgl_renderer_force_ctx_0(); + + if (!virtio_gpu_virgl_reset(g)) { + return false; + } + /* fallthrough */ + case RS_START: + if (virtio_gpu_virgl_init(g)) { + gl->renderer_state =3D RS_INIT_FAILED; + return false; + } + + gl->renderer_state =3D RS_INITED; + break; + case RS_INIT_FAILED: + return false; + case RS_INITED: + break; + } + + return true; +} + static void virtio_gpu_virgl_add_capset(GArray *capset_ids, uint32_t capse= t_id) { g_array_append_val(capset_ids, capset_id); diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index 718332284305..1f509d0d5beb 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -389,9 +389,11 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd); void virtio_gpu_virgl_fence_poll(VirtIOGPU *g); void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g); -void virtio_gpu_virgl_reset(VirtIOGPU *g); -int virtio_gpu_virgl_init(VirtIOGPU *g); GArray *virtio_gpu_virgl_get_capsets(VirtIOGPU *g); void virtio_gpu_virgl_reset_async_fences(VirtIOGPU *g); +void virtio_gpu_virgl_resource_destroy(VirtIOGPU *g, + struct virtio_gpu_simple_resource *= res, + Error **errp); +bool virtio_gpu_virgl_update_render_state(VirtIOGPU *g); =20 #endif --=20 2.52.0 From nobody Sat Apr 11 23:03:16 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass(p=none dis=none) header.from=collabora.com ARC-Seal: i=2; a=rsa-sha256; t=1772463812; cv=pass; d=zohomail.com; s=zohoarc; b=c9gWhgC57i9ckLmozrCnioIpAXgd7jkUUST6xaNAAyQg9spsLVT6JGf1xnO41DR+hVH68xWCzyeaPd9XvJaJ4gvoCDW8HN3wM+mkaNQtAon2ixcNSmh1uUne0SdLvq4D3raKRww7skzMZ0ZQfTrrwz+rm6uIMTXQYUbLTiAopyw= ARC-Message-Signature: i=2; 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Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v21 18/18] virtio-gpu: Support mapping hostmem blobs with map_fixed Date: Mon, 2 Mar 2026 17:59:20 +0300 Message-ID: <20260302145920.735423-19-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302145920.735423-1-dmitry.osipenko@collabora.com> References: <20260302145920.735423-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.968, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.495, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1772463813380158500 Content-Type: text/plain; charset="utf-8" Support mapping virgl blobs to a fixed location of a hostmem memory region using new virglrenderer MAP_FIXED API. This new feature closes multiple problems for virtio-gpu on QEMU: - Having dedicated memory region for each mapped blob works notoriously slow due to QEMU's memory region software design built around RCU that isn't optimized for frequent removal of the regions - KVM isn't optimized for a frequent slot changes too - QEMU/KVM has a limit for a total number of created memory regions, crashing QEMU when limit is reached This patch makes virtio-gpu-gl to pre-create a single anonymous memory region covering whole hostmem area to which blobs will be mapped using the MAP_FIXED API. Not all virgl resources will support mapping at a fixed memory address. For them, we will continue to create individual nested memory sub-regions. In particular, vrend resources may not have MAP_FIXED capability. Venus and DRM native contexts will largely benefit from the MAP_FIXED feature in terms of performance and stability improvement. Tested-by: Yiwei Zhang Reviewed-by: Akihiko Odaki Signed-off-by: Dmitry Osipenko --- hw/display/virtio-gpu-gl.c | 37 ++++++++++++++++++++- hw/display/virtio-gpu-virgl.c | 59 +++++++++++++++++++++++++++++++++- include/hw/virtio/virtio-gpu.h | 3 ++ 3 files changed, 97 insertions(+), 2 deletions(-) diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c index 8b71dd6fc26f..2b7a41c46643 100644 --- a/hw/display/virtio-gpu-gl.c +++ b/hw/display/virtio-gpu-gl.c @@ -13,6 +13,7 @@ =20 #include "qemu/osdep.h" #include "qemu/iov.h" +#include "qemu/mmap-alloc.h" #include "qemu/module.h" #include "qemu/error-report.h" #include "qapi/error.h" @@ -106,7 +107,12 @@ static void virtio_gpu_gl_reset(VirtIODevice *vdev) static void virtio_gpu_gl_device_realize(DeviceState *qdev, Error **errp) { ERRP_GUARD(); - VirtIOGPU *g =3D VIRTIO_GPU(qdev); + VirtIOGPUBase *b =3D VIRTIO_GPU_BASE(qdev); + VirtIOGPU *g =3D VIRTIO_GPU(b); +#if !defined(CONFIG_WIN32) + VirtIOGPUGL *gl =3D VIRTIO_GPU_GL(g); + void *map; +#endif =20 #if HOST_BIG_ENDIAN error_setg(errp, "virgl is not supported on bigendian platforms"); @@ -136,6 +142,24 @@ static void virtio_gpu_gl_device_realize(DeviceState *= qdev, Error **errp) g->parent_obj.conf.flags |=3D 1 << VIRTIO_GPU_FLAG_CONTEXT_INIT_ENABLE= D; #endif =20 +#if !defined(CONFIG_WIN32) + if (virtio_gpu_hostmem_enabled(b->conf)) { + map =3D qemu_ram_mmap(-1, b->conf.hostmem, qemu_real_host_page_siz= e(), + 0, 0); + if (map =3D=3D MAP_FAILED) { + error_setg_errno(errp, errno, + "virgl hostmem region could not be initialize= d"); + return; + } + + gl->hostmem_mmap =3D map; + memory_region_init_ram_ptr(&gl->hostmem_background, NULL, + "hostmem-background", b->conf.hostmem, + gl->hostmem_mmap); + memory_region_add_subregion(&b->hostmem, 0, &gl->hostmem_backgroun= d); + } +#endif + virtio_gpu_device_realize(qdev, errp); } =20 @@ -172,6 +196,17 @@ static void virtio_gpu_gl_device_unrealize(DeviceState= *qdev) gl->renderer_state =3D RS_START; =20 g_array_unref(g->capset_ids); + + /* + * It is not guaranteed that the memory region will be finalized + * immediately with memory_region_del_subregion(), there can be + * a remaining reference to gl->hostmem_mmap. VirtIO-GPU is not + * hotpluggable, hence no need to worry about the leaked mapping. + * + * The memory_region_del_subregion(gl->hostmem_background) is unnecess= ary + * because b->hostmem and gl->hostmem_background belong to the same + * device and will be gone at the same time. + */ } =20 static void virtio_gpu_gl_class_init(ObjectClass *klass, const void *data) diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c index 89c11c142c25..9d9beacdfab5 100644 --- a/hw/display/virtio-gpu-virgl.c +++ b/hw/display/virtio-gpu-virgl.c @@ -41,9 +41,13 @@ VIRGL_VERSION_MICRO >=3D (micro)) #endif =20 +#define VIRGL_HAS_MAP_FIXED \ + (VIRGL_CHECK_VERSION(1, 3, 0) && !IS_ENABLED(CONFIG_WIN32)) + struct virtio_gpu_virgl_resource { struct virtio_gpu_simple_resource base; MemoryRegion *mr; + void *map_fixed; }; =20 static struct virtio_gpu_virgl_resource * @@ -155,6 +159,9 @@ virtio_gpu_virgl_map_resource_blob(VirtIOGPU *g, g_autofree char *name =3D NULL; struct virtio_gpu_virgl_hostmem_region *vmr; VirtIOGPUBase *b =3D VIRTIO_GPU_BASE(g); +#if VIRGL_HAS_MAP_FIXED + VirtIOGPUGL *gl =3D VIRTIO_GPU_GL(g); +#endif MemoryRegion *mr; uint64_t size; void *data; @@ -165,6 +172,41 @@ virtio_gpu_virgl_map_resource_blob(VirtIOGPU *g, return -EOPNOTSUPP; } =20 +#if VIRGL_HAS_MAP_FIXED + /* + * virgl_renderer_resource_map_fixed() allows to create multiple + * mappings of the same resource, while virgl_renderer_resource_map() + * not. Don't allow mapping same resource twice. + */ + if (res->map_fixed || res->mr) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: failed to map(fixed) virgl resource: already ma= pped\n", + __func__); + return -EBUSY; + } + + ret =3D virgl_renderer_resource_map_fixed(res->base.resource_id, + gl->hostmem_mmap + offset); + switch (ret) { + case 0: + res->map_fixed =3D gl->hostmem_mmap + offset; + return 0; + + case -EOPNOTSUPP: + /* + * MAP_FIXED is unsupported by this resource. + * Mapping falls back to a blob subregion method in that case. + */ + break; + + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: failed to map(fixed) virgl resource: %s\n", + __func__, strerror(-ret)); + return ret; + } +#endif + ret =3D virgl_renderer_resource_map(res->base.resource_id, &data, &siz= e); if (ret) { qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map virgl resource: = %s\n", @@ -181,7 +223,7 @@ virtio_gpu_virgl_map_resource_blob(VirtIOGPU *g, =20 mr =3D &vmr->mr; memory_region_init_ram_ptr(mr, OBJECT(vmr), "mr", size, data); - memory_region_add_subregion(&b->hostmem, offset, mr); + memory_region_add_subregion_overlap(&b->hostmem, offset, mr, 1); =20 res->mr =3D mr; =20 @@ -200,6 +242,21 @@ virtio_gpu_virgl_unmap_resource_blob(VirtIOGPU *g, MemoryRegion *mr =3D res->mr; int ret; =20 +#if VIRGL_HAS_MAP_FIXED + if (res->map_fixed) { + if (mmap(res->map_fixed, res->base.blob_size, PROT_READ | PROT_WRI= TE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, + -1, 0) =3D=3D MAP_FAILED) { + ret =3D -errno; + error_report("%s: failed to unmap(fixed) virgl resource: %s", + __func__, strerror(-ret)); + return ret; + } + + res->map_fixed =3D NULL; + } +#endif + if (!mr) { return 0; } diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index 1f509d0d5beb..a48b50d4c825 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -263,6 +263,9 @@ struct VirtIOGPUGL { =20 QEMUBH *async_fence_bh; QSLIST_HEAD(, virtio_gpu_virgl_context_fence) async_fenceq; + + MemoryRegion hostmem_background; + void *hostmem_mmap; }; =20 struct VhostUserGPU { --=20 2.52.0