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 76F3EC5CFC1 for ; Mon, 17 Aug 2026 06:51:11 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2F2C910E65C; Mon, 17 Aug 2026 06:51:11 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="RlZkYtQ1"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.14]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7DC5310E65C for ; Mon, 17 Aug 2026 06:51:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1786949470; x=1818485470; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=23cp58wCo+ew3O9RlUPh+DeEXILqlXDjfHYtq4BlIto=; b=RlZkYtQ1KRicjbgWaV8yg7OSZkOqOwTel/K3K/UsTAvmsEosa8lud998 Pw615I8Anh//IPL+Kmkl9QT3WOdz2o4qOAG+dmx3xjZsAqtDXh4mGU0xE m3RZ6/VjNjRuoc/oWC4XfYAvXV5lPBMJXdnR4owNwLF46/HVJq1rCRWbU 46PEHjNKNzsj765p0SziAklzlaZwXSICIJiaR8dusfmQmLaCCbormd479 mBnc/zYWBe+6XQ6JRvfsMTFB8W7x4JNHaFjbXZNCGpB85nFgwpoYUP9sD BK3vr4yXbMevTdR7+qxEqVm6Ycxqe4vyiQGbwQLRKSmxRklknqWcuaL/Y Q==; X-CSE-ConnectionGUID: RB9FkMgVTpKdG/KctqSi1A== X-CSE-MsgGUID: krdydgD9Q5Glct2ycqboZg== X-IronPort-AV: E=McAfee;i="6800,10657,11877"; a="91289536" X-IronPort-AV: E=Sophos;i="6.25,228,1779174000"; d="scan'208";a="91289536" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Aug 2026 23:51:10 -0700 X-CSE-ConnectionGUID: wvJvBchaSfuvU1rqMeARrA== X-CSE-MsgGUID: lU7vgfTiStODPT+MosBgBg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,228,1779174000"; d="scan'208";a="264383763" Received: from tejasupa-desk.iind.intel.com (HELO tejasupa-desk) ([10.190.239.37]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Aug 2026 23:51:08 -0700 From: Tejas Upadhyay To: intel-xe@lists.freedesktop.org Cc: himal.prasad.ghimiray@intel.com, Tejas Upadhyay Subject: [PATCH V16 00/12] Add memory page offlining support Date: Mon, 17 Aug 2026 12:20:55 +0530 Message-ID: <20260817065055.3734576-14-tejas.upadhyay@intel.com> X-Mailer: git-send-email 2.52.0 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" This functionality represents a significant step in making the xe driver gracefully handle hardware memory degradation. By integrating with the DRM Buddy allocator, the driver can permanently "carve out" faulty memory so it isn't reused by subsequent allocations. IGT tests for testing this via injecting simple single address and duplicate address fault to unit test functionality: https://patchwork.freedesktop.org/patch/740601/ v16: - Correct sysfs patches with moving code with rcu lock - In case purge fail let next alloc decide final failure - Remove addr_to_block API, its being pulled from drm-tip - Remove some unused code and replace where existing API can be used v15: - Split few big patches into small - Avoid vram_mgr lock in sysfs - fix missing queue_pages counter increment v14: - Solve sashiko reviews - Remove SOFT->HARD offline patch, decision is taken based on -EEXIST - Dump gpu buddy allocated patch dropped v13: - Add fault inject and remove standlone debugfs v12: - Fix Sashiko review comments v11: - Add BAN reason for UMD to know about offlining - Add support for soft offline mode - Rebase and remove dummy lockdep annotation patch, as it merged from upstream v10: - Remove RFC v7: - Improve debugfs warning messages - Use scope_guard for locking(MattB) - Adapt addition of queue member of LRC BO(MattB) - Extend and use xe_ttm_bo_purge API for vram pages(MattB) - Handle dma_buf_map requests for native and remote(MattB) - Address if in never initialized block, set block to NULL - Add lockdep in gpu buddy (MattB) - Correct allocated_addr_to_block logic (MattA) V6: - Add more specific tests to noncritical bo sections - Handle smooth exit of user created exec queues - Break code and make purge specific static API V5: - Sysfs "max_pages" addition - Reset block->private NULL post purge - Remove wedge, return -EIO to system controller will initiate reset - Add debugfs tests to trigger different test scenarios manually and via igt - Rename addr_to_tbo to addr_to_block and move under gpu/buddy.c V4: API reworks, add configfs for policy reservation and apply config everywhere V3: use res_to_mem_region to avoid use of block->private (MattA) V2: - some fixes and clean up on errors - Added xe_vram_addr_to_region helper to avoid other use of block->private(MattB) Tejas Upadhyay (12): drm/xe: Link VRAM object with gpu buddy drm/xe: Link LRC BO and its execution Queue drm/xe: Extend BO purge to handle vram pages as well drm/xe/bo: Make xe_bo_is_user() public drm/xe: Guard teardown paths against purged BOs drm/xe/vram: Extract buddy alloc and free helpers drm/xe/vram: Add page offline data structures and lifecycle drm/xe/vram: Add VRAM page offline fault handler drm/xe/configfs: Add vram bad page reservation policy drm/xe: Add sysfs interface for bad gpu vram pages drm/xe/uapi: Expose ban reason in EXEC_QUEUE_GET_PROPERTY_BAN drm/xe: Add fault-inject based VRAM page offline injection drivers/gpu/drm/xe/xe_bo.c | 13 +- drivers/gpu/drm/xe/xe_bo.h | 5 +- drivers/gpu/drm/xe/xe_bo_types.h | 3 + drivers/gpu/drm/xe/xe_configfs.c | 67 ++- drivers/gpu/drm/xe/xe_configfs.h | 2 + drivers/gpu/drm/xe/xe_debugfs.c | 50 ++ drivers/gpu/drm/xe/xe_debugfs.h | 2 + drivers/gpu/drm/xe/xe_device_sysfs.c | 7 + drivers/gpu/drm/xe/xe_dma_buf.c | 3 + drivers/gpu/drm/xe/xe_exec_queue.c | 14 +- drivers/gpu/drm/xe/xe_exec_queue_types.h | 7 +- drivers/gpu/drm/xe/xe_execlist.c | 4 +- drivers/gpu/drm/xe/xe_guc_submit.c | 32 +- drivers/gpu/drm/xe/xe_lrc.c | 1 + drivers/gpu/drm/xe/xe_pt.c | 5 +- drivers/gpu/drm/xe/xe_ttm_vram_mgr.c | 603 ++++++++++++++++++++- drivers/gpu/drm/xe/xe_ttm_vram_mgr.h | 3 + drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h | 40 ++ include/uapi/drm/xe_drm.h | 18 +- 19 files changed, 834 insertions(+), 45 deletions(-) -- 2.52.0