From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1DBCACCF9F8 for ; Sun, 9 Nov 2025 05:40:30 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vHy8o-0005aW-UE; Sun, 09 Nov 2025 00:39:06 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vHy8b-0005Wv-Cp for qemu-devel@nongnu.org; Sun, 09 Nov 2025 00:38:53 -0500 Received: from mgamail.intel.com ([192.198.163.18]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vHy8Z-0007ak-J6 for qemu-devel@nongnu.org; Sun, 09 Nov 2025 00:38:53 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1762666732; x=1794202732; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=VuJToc00JExeRjtrvaBivKFB6Bcjdaq8Xje4Z9MGKu4=; b=LrVcT+Mtll7vw09cR9tnBmNe457gpxhU22dNp10Jk/oMEdtF7WMQ2eKu lJkpQ5KqEw9ROutQn92JGYBQhWzk97WMQ5CjnWIpmu1gXBfDpeOYldSFS dsHjxa26aaNkLP1Z+fd6gwohfCAoNCEb/pOQLgAR6vsrws2Ll5s67G8fA j7w3d+eLwAlRXf/17iM9ea/jR19aocs/vgYRA9X+NxwhIK7hvt3MfxQqA ONO7bMSw57jglsihBy+QvBonQqxWYL3Featgpu0mwF4zL2FacPW1y3HbD 7dbLzMcu6UmPedWMEy9+PyS+9WLZ54uo+hs96Isa+k3R6u4740EyBdJ7f Q==; X-CSE-ConnectionGUID: YHKrpMgTSY65kyfdwWB1ag== X-CSE-MsgGUID: nG/Zx5aQSIy05h1iylUr7g== X-IronPort-AV: E=McAfee;i="6800,10657,11607"; a="63965790" X-IronPort-AV: E=Sophos;i="6.19,291,1754982000"; d="scan'208";a="63965790" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Nov 2025 21:38:41 -0800 X-CSE-ConnectionGUID: y4XITdonS8CMOahq/Pr0wQ== X-CSE-MsgGUID: SJfxkOC/TiGii4fvvRbQ8g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,291,1754982000"; d="scan'208";a="188129060" Received: from vkasired-desk2.fm.intel.com ([10.105.128.132]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Nov 2025 21:38:41 -0800 From: Vivek Kasireddy To: qemu-devel@nongnu.org Cc: Vivek Kasireddy , Alex Williamson , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PATCH v2 06/10] linux-headers: Update vfio.h to include VFIO_DEVICE_FEATURE_DMA_BUF Date: Sat, 8 Nov 2025 21:33:49 -0800 Message-ID: <20251109053801.2267149-7-vivek.kasireddy@intel.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20251109053801.2267149-1-vivek.kasireddy@intel.com> References: <20251109053801.2267149-1-vivek.kasireddy@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.198.163.18; 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Cc: Alex Williamson Cc: Cédric Le Goater Signed-off-by: Vivek Kasireddy --- linux-headers/linux/vfio.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h index 4d96d1fc12..bc11ca3663 100644 --- a/linux-headers/linux/vfio.h +++ b/linux-headers/linux/vfio.h @@ -1478,6 +1478,31 @@ struct vfio_device_feature_bus_master { }; #define VFIO_DEVICE_FEATURE_BUS_MASTER 10 +/** + * Upon VFIO_DEVICE_FEATURE_GET create a dma_buf fd for the + * regions selected. + * + * open_flags are the typical flags passed to open(2), eg O_RDWR, O_CLOEXEC, + * etc. offset/length specify a slice of the region to create the dmabuf from. + * nr_ranges is the total number of (P2P DMA) ranges that comprise the dmabuf. + * + * Return: The fd number on success, -1 and errno is set on failure. + */ +#define VFIO_DEVICE_FEATURE_DMA_BUF 11 + +struct vfio_region_dma_range { + __u64 offset; + __u64 length; +}; + +struct vfio_device_feature_dma_buf { + __u32 region_index; + __u32 open_flags; + __u32 flags; + __u32 nr_ranges; + struct vfio_region_dma_range dma_ranges[]; +}; + /* -------- API for Type1 VFIO IOMMU -------- */ /** -- 2.50.1