From nobody Mon Feb 9 16:18:43 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=1621384134; cv=none; d=zohomail.com; s=zohoarc; b=WD0EckpGl5U3sOJ8zwRLa1lZNt6MsoThL0MYut62Hc/AzNeDf7ce9ufc4Gxl0fOsXhhKW8roryta/EDCjrmkTh0BXKt+twafDWc0Ck6FfOTIjGABT4S4HJU0+Yhr+ELbwAcXYcMKrPbvvynXBcgbhWbD+wOtv0t+7o4TCRRod8s= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1621384134; 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=0dWkKzjWZK3BNW0ItyVRWLovWdTmUp6Mq54XLj0au9s=; b=XuT4hfKRtzzEviPDOXCS0NmBgSZqA53STGBTslabIiy9izawEaytKhwEYYODLnwJnAkZ2eSqadtExvVbeSZIHygV3jLUP0cfHywpdWkFuVeU+L/lJYbjavZoEY1+lF5UQpedPLhZfRaNraLayKuecJYXbVDJSdkWv8LkZ7pIyAQ= 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 1621384134136352.543766260305; Tue, 18 May 2021 17:28:54 -0700 (PDT) Received: from localhost ([::1]:56662 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ljA4z-0005y7-2b for importer@patchew.org; Tue, 18 May 2021 20:28:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58842) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljA3C-00038M-5P for qemu-devel@nongnu.org; Tue, 18 May 2021 20:27:03 -0400 Received: from mga09.intel.com ([134.134.136.24]:43020) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljA36-0006ZW-HB for qemu-devel@nongnu.org; Tue, 18 May 2021 20:27:01 -0400 Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 May 2021 17:26:41 -0700 Received: from vkasired-desk2.fm.intel.com ([10.105.128.127]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 May 2021 17:26:40 -0700 IronPort-SDR: xnBad2q0afvQTCbiKg+E/svsi7hpWkJK4hzPd2nYDvlAaE48lpz7PYxZz6V0drLzWFkCbyvuQA JfeU4uqEci2Q== X-IronPort-AV: E=McAfee;i="6200,9189,9988"; a="200902434" X-IronPort-AV: E=Sophos;i="5.82,310,1613462400"; d="scan'208";a="200902434" IronPort-SDR: efhv2w7MRbBRTtr/XG6P9wZhRaH127j3bL2AtTk6LSWwSBWCci89CcwLbeGeoFLVaKugnUfsR7 CQ7/wb/oHqFw== X-IronPort-AV: E=Sophos;i="5.82,310,1613462400"; d="scan'208";a="394177355" From: Vivek Kasireddy To: qemu-devel@nongnu.org Subject: [PATCH v5 04/13] virtio-gpu: Add virtio_gpu_find_check_resource Date: Tue, 18 May 2021 17:14:05 -0700 Message-Id: <20210519001414.786439-5-vivek.kasireddy@intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210519001414.786439-1-vivek.kasireddy@intel.com> References: <20210519001414.786439-1-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=134.134.136.24; envelope-from=vivek.kasireddy@intel.com; helo=mga09.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, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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 Cc: 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 db56f0454a..7b5296f0d0 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); @@ -46,7 +50,8 @@ void virtio_gpu_update_cursor_data(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; } @@ -114,6 +119,37 @@ 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, @@ -352,11 +388,9 @@ 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 @@ -410,11 +444,9 @@ 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 @@ -497,11 +529,9 @@ 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 @@ -709,11 +739,9 @@ 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 2.30.2