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GET /api/patches/2194891/?format=api
{ "id": 2194891, "url": "http://patchwork.ozlabs.org/api/patches/2194891/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260210070155.1176081-9-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": "<20260210070155.1176081-9-vivek.kasireddy@intel.com>", "list_archive_url": null, "date": "2026-02-10T06:59:48", "name": "[v6,08/11] vfio/region: Add a helper to get region index from memory region", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "42e8e6eee5de310c2e9379596b51bdb8ff9aff69", "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/20260210070155.1176081-9-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/2194891/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2194891/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=EcDLhtgQ;\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 4f9CF761Msz1xvb\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 10 Feb 2026 18:02:50 +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 1vphlU-00050A-KH; Tue, 10 Feb 2026 02:02:28 -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 1vphlT-0004zG-4s\n for qemu-devel@nongnu.org; Tue, 10 Feb 2026 02:02:27 -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 1vphlP-0004oR-NR\n for qemu-devel@nongnu.org; Tue, 10 Feb 2026 02:02:26 -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 23:02:14 -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=1770706943; x=1802242943;\n h=from:to:cc:subject:date:message-id:in-reply-to:\n references:mime-version:content-transfer-encoding;\n bh=6rfHFdfPdD8BjvFsHmnrTLtCCMNlWfo+Utny8DB0OFs=;\n b=EcDLhtgQfCM3Yc8EVPNXzGA2A2zjhn3fGx/ltwAmQtXs3VJbpyogDNQE\n G4UhvT8LbRP1mV7FljL+/4641Pqyg3Uqi4oKz6fvffFip5jb1jUPjMz40\n xf1Dw7BWGN5F7NSE5n04zY/iXo4K0V5GBs5AR0O3vbJEZ3RNg2/KsrOgg\n aCHpMlWE3cH6RHyEq+saHiMyb2zVZkvIyEG5ikH1DM3dVKlB5FxDVwB3e\n oWIh3NuWGLBf3RSkUpsT5dxVG9dQNV6nB7hcEGoAWg8pSbnk+wee+02Hr\n x2fool/uIyuFoosjKyumAlVfdGEPd8R3QEYM8QhmT8SIDE3JIa4Xvw3yJ Q==;", "X-CSE-ConnectionGUID": [ "T04CfiGFS6WH2OsZszVOcw==", "FlnyOwycSvWlv9rNNzmCpA==" ], "X-CSE-MsgGUID": [ "c/BXim4TTM6551twkzK1XQ==", "2iogxenST/OeIdXrQfH/wA==" ], "X-IronPort-AV": [ "E=McAfee;i=\"6800,10657,11696\"; a=\"72012179\"", "E=Sophos;i=\"6.21,283,1763452800\"; d=\"scan'208\";a=\"72012179\"", "E=Sophos;i=\"6.21,283,1763452800\"; d=\"scan'208\";a=\"210920553\"" ], "X-ExtLoop1": "1", "From": "Vivek Kasireddy <vivek.kasireddy@intel.com>", "To": "qemu-devel@nongnu.org", "Cc": "Vivek Kasireddy <vivek.kasireddy@intel.com>,\n Alex Williamson <alex@shazbot.org>,\n =?utf-8?q?C=C3=A9dric_Le_Goater?= <clg@redhat.com>", "Subject": "[PATCH v6 08/11] vfio/region: Add a helper to get region index from\n memory region", "Date": "Mon, 9 Feb 2026 22:59:48 -0800", "Message-ID": "<20260210070155.1176081-9-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": "Having a way to figure out the region index (or bar) associated\nwith a memory region is helpful in various scenarios. For example,\nthis capability can be useful in retrieving the region info needed\nfor mapping a part of a VFIO region or creating a dmabuf.\n\nCc: Alex Williamson <alex@shazbot.org>\nCc: Cédric Le Goater <clg@redhat.com>\nSigned-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>\n---\n hw/vfio/region.c | 14 ++++++++++++++\n include/hw/vfio/vfio-device.h | 10 ++++++++++\n 2 files changed, 24 insertions(+)", "diff": "diff --git a/hw/vfio/region.c b/hw/vfio/region.c\nindex ab39d77574..9c3dc19ee1 100644\n--- a/hw/vfio/region.c\n+++ b/hw/vfio/region.c\n@@ -461,3 +461,17 @@ void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled)\n trace_vfio_region_mmaps_set_enabled(memory_region_name(region->mem),\n enabled);\n }\n+\n+int vfio_get_region_index_from_mr(MemoryRegion *mr)\n+{\n+ VFIORegion *region;\n+\n+ while (mr->container) {\n+ if (mr->ops == &vfio_region_ops) {\n+ region = mr->opaque;\n+ return region->nr;\n+ }\n+ mr = mr->container;\n+ }\n+ return -1;\n+}\ndiff --git a/include/hw/vfio/vfio-device.h b/include/hw/vfio/vfio-device.h\nindex 828a31c006..596c7f5a10 100644\n--- a/include/hw/vfio/vfio-device.h\n+++ b/include/hw/vfio/vfio-device.h\n@@ -308,6 +308,16 @@ bool vfio_device_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_t\n \n int vfio_device_get_irq_info(VFIODevice *vbasedev, int index,\n struct vfio_irq_info *info);\n+\n+/**\n+ * Return the region index associated with a given MemoryRegion. The index\n+ * can be useful in retrieving region info.\n+ *\n+ * @mr: MemoryRegion to use\n+ *\n+ * Returns the region index or -1 on error.\n+ */\n+int vfio_get_region_index_from_mr(MemoryRegion *mr);\n #endif\n \n /* Returns 0 on success, or a negative errno. */\n", "prefixes": [ "v6", "08/11" ] }