From nobody Mon Nov 25 09:53:28 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; 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; dmarc=pass(p=quarantine dis=none) header.from=collabora.com ARC-Seal: i=1; a=rsa-sha256; t=1716779104; cv=none; d=zohomail.com; s=zohoarc; b=EIRl3irDMButqDb63pQtOCKbHoAbldVEZx4rd0ot0PY7f5KomPHk/uDwdqYtW3TuTSlu7CjQUqpjvsQFokbbLCFZmb1X76/dLVsINqVWqkoECj2SRi/F17yEInIbvZJL9BZeyWjgMBKTNGhcxiUAinOBSU1g6uKg0FfrU/otTuo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1716779104; 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=i7yhIiWcm9zkvzuqwdeQjnweSowswJaBz6KEcjQ6/QQ=; b=DRA5Xb6KL1TtjXuLtJpdSVWhD796FEXdS3ytJd5DGrGjArNpoKkDUwQWiMqW9Dn1QrZzTKyIfeFlmO18d3oP+7zP2I6JtRvVn5Z13u7k4gYOxlHKLeyKRxnNV/DwVkqHPVpHnsz8s9kMFKzbKnSeZf5qV5L8is5tlCpZlptKkBY= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; 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; dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716779104743872.5603677311876; Sun, 26 May 2024 20:05:04 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBQdi-0005CD-6T; Sun, 26 May 2024 23:03:10 -0400 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 1sBQdg-0005Bn-NN for qemu-devel@nongnu.org; Sun, 26 May 2024 23:03:08 -0400 Received: from madrid.collaboradmins.com ([2a00:1098:ed:100::25]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBQdf-0002Hk-06 for qemu-devel@nongnu.org; Sun, 26 May 2024 23:03:08 -0400 Received: from workpc.. (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dmitry.osipenko) by madrid.collaboradmins.com (Postfix) with ESMTPSA id F34CC37820A7; Mon, 27 May 2024 03:03:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1716778985; bh=V8X4KEQAh4Bflm8+FIjqy25Y4QZXeLYitPNfFJ5VR9k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=414XHKZTwWCv5d1+y0BQtYgj9VWr1NMPEv6v1KuW4AGtn4pci1R/Q+3AQELzlQg0I esL0LWn2k2qzCBOm59OQ5eEYXL58NqabVOFvmS0zN3VFUyqlPAqhlwdtZHAU+9QwrA S6m6dEqzGViEYT+rf9DjisyTglkfXjfbn9vWPOtKzP8vVC5/DROtMtZJq97RDwaabC j76hjt+vS7QjDGli/ZDDdUgJeBQJh4i+fyd1KZflzTZeO+jFAOt6JBkYY4zPJLlpCw IcL1X8G4czvaF/m06etEGnL+16Z8C0p5LBIrAsv46C2j0TZ8GF66cBEZ5Iu3VR/PTp 7ahKbmStQfmEw== 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 , "Michael S . Tsirkin" , Stefano Stabellini , Antonio Caggiano , "Dr . David Alan Gilbert" , Robert Beckett , Gert Wollny , =?UTF-8?q?Alex=20Benn=C3=A9e?= Cc: qemu-devel@nongnu.org, Gurchetan Singh , ernunes@redhat.com, Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Pierre-Eric Pelloux-Prayer , Honglei Huang , Julia Zhang , Chen Jiqian , Yiwei Zhang Subject: [PATCH v13 03/13] virtio-gpu: Handle virtio_gpu_virgl_init() failure Date: Mon, 27 May 2024 06:02:23 +0300 Message-ID: <20240527030233.3775514-4-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240527030233.3775514-1-dmitry.osipenko@collabora.com> References: <20240527030233.3775514-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=2a00:1098:ed:100::25; envelope-from=dmitry.osipenko@collabora.com; helo=madrid.collaboradmins.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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 @collabora.com) X-ZM-MESSAGEID: 1716779105450100002 Content-Type: text/plain; charset="utf-8" virtio_gpu_virgl_init() may fail, leading to a further Qemu crash because Qemu assumes it never fails. Check virtio_gpu_virgl_init() return code and don't execute virtio commands on error. Failed virtio_gpu_virgl_init() will result in a timed out virtio commands for a guest OS. Signed-off-by: Dmitry Osipenko --- hw/display/virtio-gpu-gl.c | 29 +++++++++++++++++++++-------- include/hw/virtio/virtio-gpu.h | 11 +++++++++-- 2 files changed, 30 insertions(+), 10 deletions(-) diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c index e06be60dfbfc..38a2b1bd3916 100644 --- a/hw/display/virtio-gpu-gl.c +++ b/hw/display/virtio-gpu-gl.c @@ -29,9 +29,14 @@ static void virtio_gpu_gl_update_cursor_data(VirtIOGPU *= g, struct virtio_gpu_scanout *s, uint32_t resource_id) { + VirtIOGPUGL *gl =3D VIRTIO_GPU_GL(g); uint32_t width, height; uint32_t pixels, *data; =20 + if (gl->renderer_state !=3D RS_INITED) { + return; + } + data =3D virgl_renderer_get_cursor_data(resource_id, &width, &height); if (!data) { return; @@ -65,13 +70,21 @@ static void virtio_gpu_gl_handle_ctrl(VirtIODevice *vde= v, VirtQueue *vq) return; } =20 - if (!gl->renderer_inited) { - virtio_gpu_virgl_init(g); - gl->renderer_inited =3D true; - } - if (gl->renderer_reset) { - gl->renderer_reset =3D false; + 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; + } else { + gl->renderer_state =3D RS_INITED; + } + break; + case RS_INIT_FAILED: + return; + case RS_INITED: + break; } =20 cmd =3D virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); @@ -98,9 +111,9 @@ static void virtio_gpu_gl_reset(VirtIODevice *vdev) * GL functions must be called with the associated GL context in main * thread, and when the renderer is unblocked. */ - if (gl->renderer_inited && !gl->renderer_reset) { + if (gl->renderer_state =3D=3D RS_INITED) { virtio_gpu_virgl_reset_scanout(g); - gl->renderer_reset =3D true; + gl->renderer_state =3D RS_RESET; } } =20 diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index 7ff989a45a5c..6e71d799e5da 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -224,11 +224,18 @@ struct VirtIOGPUClass { Error **errp); }; =20 +/* VirtIOGPUGL renderer states */ +typedef enum { + RS_START, /* starting state */ + RS_INIT_FAILED, /* failed initialisation */ + RS_INITED, /* initialised and working */ + RS_RESET, /* inited and reset pending, moves to start after rese= t */ +} RenderState; + struct VirtIOGPUGL { struct VirtIOGPU parent_obj; =20 - bool renderer_inited; - bool renderer_reset; + RenderState renderer_state; =20 QEMUTimer *fence_poll; QEMUTimer *print_stats; --=20 2.44.0