From nobody Sun Nov 16 06:29:28 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.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-Seal: i=1; a=rsa-sha256; t=1592268066; cv=none; d=zohomail.com; s=zohoarc; b=fJpKfH1T9RxGezj2lBhICLcfuQ8iKsiNbzKAQs+jRQmO1wgnSSLL9KPIBV8WCbj9eiB9PPDepoOy4hOWL3I0p8KZN2KNdAF70p0QuXeo33trIJ8omflJk82ycXjDxNmDz6wLWD8Tvr5p/Q2Is4IhRniGk7TZjb94XiGhND9BNCo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1592268066; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=zxB7RwSaVVtFyWeEqTqCs/d6G23scsvXBunnaTU0OR4=; b=YncA33uJ0AVMJeoH5uROT1Ekvidvnjs6kttUiTfAnydE2vLjK7+zS0ZnkfLValuEwWPVGBVi8QLGNFwhgAxwIoeE5ErFg3uvoqUxcT8VfNUv+43osCuRkanTiNVLwSebdE25UflpDYSBaUb4Z0ARfwyxXoSV/um0uvsYlVjUQJ0= ARC-Authentication-Results: i=1; mx.zohomail.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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1592268066379823.2326955929198; Mon, 15 Jun 2020 17:41:06 -0700 (PDT) Received: from localhost ([::1]:47674 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jkzez-0003qz-7G for importer@patchew.org; Mon, 15 Jun 2020 20:41:05 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43200) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jkzZu-0004fH-TU for qemu-devel@nongnu.org; Mon, 15 Jun 2020 20:35:51 -0400 Received: from zero.eik.bme.hu ([152.66.115.2]:46224) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jkzZr-0003ye-NL for qemu-devel@nongnu.org; Mon, 15 Jun 2020 20:35:50 -0400 Received: from zero.eik.bme.hu (blah.eik.bme.hu [152.66.115.182]) by localhost (Postfix) with SMTP id DDFA0748DDC; Tue, 16 Jun 2020 02:35:40 +0200 (CEST) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 689A37482C8; Tue, 16 Jun 2020 02:35:40 +0200 (CEST) Message-Id: In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v2 3/8] sm501: Ignore no-op blits Date: Tue, 16 Jun 2020 02:22:30 +0200 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org X-Spam-Probability: 8% 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=152.66.115.2; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/15 20:35:40 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Sebastian Bauer , Magnus Damm , Gerd Hoffmann , Aurelien Jarno Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Some guests seem to try source copy blits with same source and dest which are no-op so avoid calling pixman for these. Signed-off-by: BALATON Zoltan Reviewed-by: Peter Maydell --- hw/display/sm501.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/display/sm501.c b/hw/display/sm501.c index 85d54b598f..3397ca9fbf 100644 --- a/hw/display/sm501.c +++ b/hw/display/sm501.c @@ -788,6 +788,11 @@ static void sm501_2d_operation(SM501State *s) (rop2_source_is_pattern ? " with pattern source" : "")); } + /* Ignore no-op blits, some guests seem to do this */ + if (src_base =3D=3D dst_base && src_pitch =3D=3D dst_pitch && + src_x =3D=3D dst_x && src_y =3D=3D dst_y) { + break; + } /* Check for overlaps, this could be made more exact */ uint32_t sb, se, db, de; sb =3D src_base + src_x + src_y * (width + src_pitch); --=20 2.21.3