From nobody Tue Feb 10 01:35:18 2026 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; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1617161148; cv=none; d=zohomail.com; s=zohoarc; b=Blj9co1Se4L1NxoXMgMZ1CY8MhEr+CthUS/tJRlork6DMNB5m6aaaZa9TN97zImEQ4IJ/SeosBgryrUAiZfsLN31PEH46OoH2A3ldc0/ozFErCUExqF4yOV7njKHhG/zxWWBoyoq9E1GXs8n8ZgASDPV4XAktyfePfR3aVrAVck= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1617161148; h=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=mdWOJ2b5nkf21oMG+4Alaq+ZPc2ddMVEOGN/zr8It2U=; b=INCPeatSh94yehdnmngv8t74QbRI2iygPTtGhtrXSBtOkf2R/fU0PNY27d0wOBog21bmReCg2uQHO04fPtWZxd+wf1+N1NOXyatqzfpCut32z5c9SGYE8TbhE+duE74bGLDiC7MZipBDOapujxV2lOlqVyxy7o/aHQ/Ccidvxjo= 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; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1617161148685909.3540623452159; Tue, 30 Mar 2021 20:25:48 -0700 (PDT) Received: from localhost ([::1]:49330 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lRRUJ-0007jr-1L for importer@patchew.org; Tue, 30 Mar 2021 23:25:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36562) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRRQd-0002ek-JI for qemu-devel@nongnu.org; Tue, 30 Mar 2021 23:21:59 -0400 Received: from mga18.intel.com ([134.134.136.126]:53070) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRRQU-00057q-KS for qemu-devel@nongnu.org; Tue, 30 Mar 2021 23:21:59 -0400 Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Mar 2021 20:21:34 -0700 Received: from vkasired-desk2.fm.intel.com ([10.105.128.127]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Mar 2021 20:21:34 -0700 IronPort-SDR: UKNOpS8kOU4GDZ9CL+WeoEalkVSPtWrGgZG7AfKw2mT52zNi/bs7IihzymjDZKdapzfLAILQYS brR4kEqqdenQ== X-IronPort-AV: E=McAfee;i="6000,8403,9939"; a="179449771" X-IronPort-AV: E=Sophos;i="5.81,291,1610438400"; d="scan'208";a="179449771" IronPort-SDR: HlRBGtJ4kGxK8YGN5Pt+JdPZurG3KQcDUV1wWYT7rF3+KwoWDfdvJ8cnGU6aD0YfUpvodN7hnz envOA6Udlf0Q== X-IronPort-AV: E=Sophos;i="5.81,291,1610438400"; d="scan'208";a="418454119" From: Vivek Kasireddy To: qemu-devel@nongnu.org Subject: [PATCH 04/11] virtio-gpu: Add virtio_gpu_find_check_resource Date: Tue, 30 Mar 2021 20:09:54 -0700 Message-Id: <20210331031001.1564125-5-vivek.kasireddy@intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210331031001.1564125-1-vivek.kasireddy@intel.com> References: <20210331031001.1564125-1-vivek.kasireddy@intel.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=134.134.136.126; envelope-from=vivek.kasireddy@intel.com; helo=mga18.intel.com 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=ham autolearn_force=no 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: Vivek Kasireddy , Gerd Hoffmann Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Move finding the resource and validating its backing storage into one function. Based-on-patch-by: Gerd Hoffmann Signed-off-by: Vivek Kasireddy --- hw/display/virtio-gpu.c | 66 +++++++++++++++++++++++++++++------------ 1 file changed, 47 insertions(+), 19 deletions(-) diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index c9f5e36fd0..de7462a515 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -35,6 +35,10 @@ =20 static struct virtio_gpu_simple_resource* virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id); +static struct virtio_gpu_simple_resource * +virtio_gpu_find_check_resource(VirtIOGPU *g, uint32_t resource_id, + bool require_backing, + const char *caller, uint32_t *error); =20 static void virtio_gpu_cleanup_mapping(VirtIOGPU *g, struct virtio_gpu_simple_resource *= res); @@ -63,7 +67,8 @@ static void update_cursor_data_simple(VirtIOGPU *g, struct virtio_gpu_simple_resource *res; uint32_t pixels; =20 - res =3D virtio_gpu_find_resource(g, resource_id); + res =3D virtio_gpu_find_check_resource(g, resource_id, false, + __func__, NULL); if (!res) { return; } @@ -158,6 +163,37 @@ virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resour= ce_id) return NULL; } =20 +static struct virtio_gpu_simple_resource * +virtio_gpu_find_check_resource(VirtIOGPU *g, uint32_t resource_id, + bool require_backing, + const char *caller, uint32_t *error) +{ + struct virtio_gpu_simple_resource *res; + + res =3D virtio_gpu_find_resource(g, resource_id); + if (!res) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid resource specified %d\= n", + caller, resource_id); + if (error) { + *error =3D VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; + } + return NULL; + } + + if (require_backing) { + if (!res->iov || !res->image) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: no backing storage %d\n", + caller, resource_id); + if (error) { + *error =3D VIRTIO_GPU_RESP_ERR_UNSPEC; + } + return NULL; + } + } + + return res; +} + void virtio_gpu_ctrl_response(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd, struct virtio_gpu_ctrl_hdr *resp, @@ -396,11 +432,9 @@ static void virtio_gpu_transfer_to_host_2d(VirtIOGPU *= g, virtio_gpu_t2d_bswap(&t2d); trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id); =20 - res =3D virtio_gpu_find_resource(g, t2d.resource_id); - if (!res || !res->iov) { - qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\= n", - __func__, t2d.resource_id); - cmd->error =3D VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; + res =3D virtio_gpu_find_check_resource(g, t2d.resource_id, true, + __func__, &cmd->error); + if (!res) { return; } =20 @@ -454,11 +488,9 @@ static void virtio_gpu_resource_flush(VirtIOGPU *g, trace_virtio_gpu_cmd_res_flush(rf.resource_id, rf.r.width, rf.r.height, rf.r.x, rf.r.y= ); =20 - res =3D virtio_gpu_find_resource(g, rf.resource_id); + res =3D virtio_gpu_find_check_resource(g, rf.resource_id, false, + __func__, &cmd->error); if (!res) { - qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\= n", - __func__, rf.resource_id); - cmd->error =3D VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; return; } =20 @@ -541,11 +573,9 @@ static void virtio_gpu_set_scanout(VirtIOGPU *g, } =20 /* create a surface for this scanout */ - res =3D virtio_gpu_find_resource(g, ss.resource_id); + res =3D virtio_gpu_find_check_resource(g, ss.resource_id, true, + __func__, &cmd->error); if (!res) { - qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\= n", - __func__, ss.resource_id); - cmd->error =3D VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; return; } =20 @@ -737,11 +767,9 @@ virtio_gpu_resource_detach_backing(VirtIOGPU *g, virtio_gpu_bswap_32(&detach, sizeof(detach)); trace_virtio_gpu_cmd_res_back_detach(detach.resource_id); =20 - res =3D virtio_gpu_find_resource(g, detach.resource_id); - if (!res || !res->iov) { - qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\= n", - __func__, detach.resource_id); - cmd->error =3D VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; + res =3D virtio_gpu_find_check_resource(g, detach.resource_id, true, + __func__, &cmd->error); + if (!res) { return; } virtio_gpu_cleanup_mapping(g, res); --=20 2.26.2