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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 AE11EE9A03B for ; Thu, 19 Feb 2026 09:13:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7194510E1EC; Thu, 19 Feb 2026 09:13:30 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="PVGJhtsf"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.14]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1ADD610E140 for ; Thu, 19 Feb 2026 09:13:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1771492407; x=1803028407; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=h2Lb5BD+bkCNcPM0+NeEGmPUBV70X1NvbFOFPlk6gRA=; b=PVGJhtsf+MEEqBExsqd43TP8TVKn4vmZwSsUyqJa0gKQ+UPZtIUaMl+m Y7TSXZZbQQjKaGKXoMI3sjHNqDWPfya+YSXpHqNGPOkHYlNG7Ii42D0jv +UHX4kFoUGIalOMMoEePIvBbHzlkL1JEx5BJ+Z7MdlLI9NUzhNPHfBn3v l0Sorg04dhal6V8Ojbew8HYJ0qPa7RBehlIsGCENq50PlyV9Jb6vsLDue hScX2kPfgiB4/WW8MQEOBXdwD+THeEKEjd8WPtQtRkBljey/W/bnI0OLa ulItgCFeXrs9lkgSfj5mmqebc/PHkornKXz/DRtFTuZr3ZMqtcz4jAKN8 w==; X-CSE-ConnectionGUID: vlh/DtThRvSA2ylyuV5FtA== X-CSE-MsgGUID: CjtV2s22RgGfOVDuF+fCYw== X-IronPort-AV: E=McAfee;i="6800,10657,11705"; a="72637307" X-IronPort-AV: E=Sophos;i="6.21,299,1763452800"; d="scan'208";a="72637307" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Feb 2026 01:13:27 -0800 X-CSE-ConnectionGUID: H5UdvTJITSmqsttqxlTu2g== X-CSE-MsgGUID: 17OkkFVTQkKBNmcLOHmFjQ== X-ExtLoop1: 1 Received: from varungup-desk.iind.intel.com ([10.190.238.71]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Feb 2026 01:13:25 -0800 From: Arvind Yadav To: intel-xe@lists.freedesktop.org Cc: matthew.brost@intel.com, himal.prasad.ghimiray@intel.com, thomas.hellstrom@linux.intel.com Subject: [RFC 1/7] drm/xe/vm: Add CPU_AUTORESET_ACTIVE VMA flag Date: Thu, 19 Feb 2026 14:43:06 +0530 Message-ID: <20260219091312.796749-2-arvind.yadav@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260219091312.796749-1-arvind.yadav@intel.com> References: <20260219091312.796749-1-arvind.yadav@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" Add XE_VMA_CPU_AUTORESET_ACTIVE to track whether a MADVISE_AUTORESET CPU address mirror VMA has been GPU-touched. The flag is set at bind time and cleared on first GPU fault, creating a one-way transition from CPU-only to GPU-touched state. Cc: Matthew Brost Cc: Thomas Hellström Cc: Himal Prasad Ghimiray Signed-off-by: Arvind Yadav --- drivers/gpu/drm/xe/xe_vm.h | 5 +++++ drivers/gpu/drm/xe/xe_vm_types.h | 8 ++++++++ 2 files changed, 13 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_vm.h b/drivers/gpu/drm/xe/xe_vm.h index 288115c7844a..7bf400f068ce 100644 --- a/drivers/gpu/drm/xe/xe_vm.h +++ b/drivers/gpu/drm/xe/xe_vm.h @@ -174,6 +174,11 @@ static inline bool xe_vma_is_userptr(struct xe_vma *vma) !xe_vma_is_cpu_addr_mirror(vma); } +static inline bool xe_vma_has_cpu_autoreset_active(struct xe_vma *vma) +{ + return vma->gpuva.flags & XE_VMA_CPU_AUTORESET_ACTIVE; +} + struct xe_vma *xe_vm_find_vma_by_addr(struct xe_vm *vm, u64 page_addr); int xe_vma_need_vram_for_atomic(struct xe_device *xe, struct xe_vma *vma, bool is_atomic); diff --git a/drivers/gpu/drm/xe/xe_vm_types.h b/drivers/gpu/drm/xe/xe_vm_types.h index 43203e90ee3e..29ff63503d4c 100644 --- a/drivers/gpu/drm/xe/xe_vm_types.h +++ b/drivers/gpu/drm/xe/xe_vm_types.h @@ -50,6 +50,14 @@ struct xe_vm_pgtable_update_op; #define XE_VMA_DUMPABLE (DRM_GPUVA_USERBITS << 8) #define XE_VMA_SYSTEM_ALLOCATOR (DRM_GPUVA_USERBITS << 9) #define XE_VMA_MADV_AUTORESET (DRM_GPUVA_USERBITS << 10) +/* + * CPU-only runtime state for MADV_AUTORESET VMAs. + * + * Set at bind time and cleared before the first GPU PTEs are installed. + * Used to distinguish CPU-only VMAs from GPU-touched ones when handling + * munmap events. + */ +#define XE_VMA_CPU_AUTORESET_ACTIVE (DRM_GPUVA_USERBITS << 11) /** * struct xe_vma_mem_attr - memory attributes associated with vma -- 2.43.0