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GET /api/patches/2194898/?format=api
{ "id": 2194898, "url": "http://patchwork.ozlabs.org/api/patches/2194898/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260210070155.1176081-5-vivek.kasireddy@intel.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260210070155.1176081-5-vivek.kasireddy@intel.com>", "list_archive_url": null, "date": "2026-02-10T06:59:44", "name": "[v6,04/11] virtio-gpu-dmabuf: Remove rcu_read_lock/unlock from virtio_gpu_create_udmabuf()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "4819f17cd6511caeb710162cbbd73edfdd9f59f6", "submitter": { "id": 81116, "url": "http://patchwork.ozlabs.org/api/people/81116/?format=api", "name": "Kasireddy, Vivek", "email": "vivek.kasireddy@intel.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260210070155.1176081-5-vivek.kasireddy@intel.com/mbox/", "series": [ { "id": 491614, "url": "http://patchwork.ozlabs.org/api/series/491614/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=491614", "date": "2026-02-10T06:59:41", "name": "vfio: Create dmabuf from multiple VFIO ranges and use it in virtio-gpu", "version": 6, "mbox": "http://patchwork.ozlabs.org/series/491614/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2194898/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2194898/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256\n header.s=Intel header.b=gBApb+Tg;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4f9CFq3QMDz1xvb\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 10 Feb 2026 18:03:27 +1100 (AEDT)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1vphlQ-0004yE-Vb; Tue, 10 Feb 2026 02:02:24 -0500", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <vivek.kasireddy@intel.com>)\n id 1vphlO-0004xT-98\n for qemu-devel@nongnu.org; Tue, 10 Feb 2026 02:02:23 -0500", "from mgamail.intel.com ([198.175.65.16])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <vivek.kasireddy@intel.com>)\n id 1vphlM-0004oY-CN\n for qemu-devel@nongnu.org; Tue, 10 Feb 2026 02:02:22 -0500", "from orviesa006.jf.intel.com ([10.64.159.146])\n by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384;\n 09 Feb 2026 23:02:14 -0800", "from vkasired-desk2.fm.intel.com ([10.105.128.132])\n by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384;\n 09 Feb 2026 23:02:13 -0800" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple;\n d=intel.com; i=@intel.com; q=dns/txt; s=Intel;\n t=1770706940; x=1802242940;\n h=from:to:cc:subject:date:message-id:in-reply-to:\n references:mime-version:content-transfer-encoding;\n bh=w/ldTTlumdmbb4uxQ7QvbLEY2tzOLXwNf75ZcOgzuno=;\n b=gBApb+TgECAFVN7dImw0uDosFg6FWgQlt8/tG58Q4AM908H+d8LAWgXy\n feJEwSvBEERSTT6gvpgWE1tSp+0asYEUkgse1ZgxGFYGyO/DPt+ZU6dBL\n dUWDurWySoWcYmaXnMSPwLC/5kiIFNif9f+Qd75Le2F7LYPcoHCIcCCZL\n JeU+lfX0FpqyqKEHU1ypk8+vUn4IX3ICzOiHtOxVboXF+PXqnl8lNzAy5\n IjKv3JQGB6XQ/WIGNrcBnt0f2BbaFGD4Z0yFRC/tk+JlUSHb/p+6fY7Dx\n OjGXKfZBQFCB2CJXnfPtBuvfF8z/DHHfvh80LCkZFoxlJ6CO/mRvyUaoV w==;", "X-CSE-ConnectionGUID": [ "9VhaUsYhRl2SF1E2QUH5yw==", "M91UMJxMSL+iQ6NuZ0tumg==" ], "X-CSE-MsgGUID": [ "X9H20DWLSYWC/Su1YniBIA==", "GrXvcaNuQM+UYtL8ntiNLQ==" ], "X-IronPort-AV": [ "E=McAfee;i=\"6800,10657,11696\"; a=\"72012156\"", "E=Sophos;i=\"6.21,283,1763452800\"; d=\"scan'208\";a=\"72012156\"", "E=Sophos;i=\"6.21,283,1763452800\"; d=\"scan'208\";a=\"210920541\"" ], "X-ExtLoop1": "1", "From": "Vivek Kasireddy <vivek.kasireddy@intel.com>", "To": "qemu-devel@nongnu.org", "Cc": "Vivek Kasireddy <vivek.kasireddy@intel.com>, =?utf-8?q?Marc-Andr=C3=A9_L?=\n\t=?utf-8?q?ureau?= <marcandre.lureau@redhat.com>,\n =?utf-8?q?Alex_Benn=C3=A9e?= <alex.bennee@linaro.org>,\n Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>,\n Dmitry Osipenko <dmitry.osipenko@collabora.com>,\n Alex Williamson <alex@shazbot.org>,\n =?utf-8?q?C=C3=A9dric_Le_Goater?= <clg@redhat.com>", "Subject": "[PATCH v6 04/11] virtio-gpu-dmabuf: Remove rcu_read_lock/unlock from\n virtio_gpu_create_udmabuf()", "Date": "Mon, 9 Feb 2026 22:59:44 -0800", "Message-ID": "<20260210070155.1176081-5-vivek.kasireddy@intel.com>", "X-Mailer": "git-send-email 2.50.1", "In-Reply-To": "<20260210070155.1176081-1-vivek.kasireddy@intel.com>", "References": "<20260210070155.1176081-1-vivek.kasireddy@intel.com>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=198.175.65.16;\n envelope-from=vivek.kasireddy@intel.com; helo=mgamail.intel.com", "X-Spam_score_int": "-43", "X-Spam_score": "-4.4", "X-Spam_bar": "----", "X-Spam_report": "(-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001,\n RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "There is no need to wrap the call to qemu_ram_block_from_host() with\nrcu_read_lock/unlock as we already hold a reference to the memory\nregion that owns the ram block. Note that, the reference was obtained\nvia dma_memory_map() while creating the mapping.\n\nCc: Marc-André Lureau <marcandre.lureau@redhat.com>\nCc: Alex Bennée <alex.bennee@linaro.org>\nCc: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>\nCc: Dmitry Osipenko <dmitry.osipenko@collabora.com>\nCc: Alex Williamson <alex@shazbot.org>\nCc: Cédric Le Goater <clg@redhat.com>\nReviewed-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>\nSigned-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>\n---\n hw/display/virtio-gpu-dmabuf.c | 3 ---\n 1 file changed, 3 deletions(-)", "diff": "diff --git a/hw/display/virtio-gpu-dmabuf.c b/hw/display/virtio-gpu-dmabuf.c\nindex c34d4c85bc..0782bcf3a1 100644\n--- a/hw/display/virtio-gpu-dmabuf.c\n+++ b/hw/display/virtio-gpu-dmabuf.c\n@@ -43,10 +43,7 @@ static void virtio_gpu_create_udmabuf(struct virtio_gpu_simple_resource *res)\n sizeof(struct udmabuf_create_item) * res->iov_cnt);\n \n for (i = 0; i < res->iov_cnt; i++) {\n- rcu_read_lock();\n rb = qemu_ram_block_from_host(res->iov[i].iov_base, false, &offset);\n- rcu_read_unlock();\n-\n if (!rb || rb->fd < 0) {\n g_free(list);\n return;\n", "prefixes": [ "v6", "04/11" ] }