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 98449C5AC67 for ; Tue, 11 Aug 2026 12:40:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 54F3B10E443; Tue, 11 Aug 2026 12:40:47 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="FlgBtYL3"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6BEF610E713 for ; Tue, 11 Aug 2026 12:40:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1786452047; x=1817988047; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=GmJdsRxKpaH+bAhWraJu2DfBL4SeviidKcEazOU2XA8=; b=FlgBtYL3okNucCnlBHD0ERRJ5GsZxzu9xeyKXYHcOs25b8CI09N8I0Zi 2yn6u270nM6Y6iY+vmA0M2gQgeOM3aG6+3BVRWETm4W/axZWsez0XXJXw HcdLXSZQ1zaZ+5T3M+HWIfOVjl7loSkFZPE22n6xQr8Fgn3CK43PsV4yw PgwTuj0OWar31DKEpF9nC2sHzMft9Hoozpl6ci8lo2KdljENZc/uQbm/I Sm7rTpnwXWm25ZvGsnnaQMwgawauUlFENfU1dPVX08eZyVjLGl2fY8Hjs HvrkkYzPQ/WzOUgbIib5eW5CmuNQPtAjQnlspNsHyCCVJDiTVIBVcy0QX g==; X-CSE-ConnectionGUID: I6p95KkwTaS8R2/TnBQJiQ== X-CSE-MsgGUID: OBRJggenRi+BZRkF1atlFw== X-IronPort-AV: E=McAfee;i="6800,10657,11871"; a="86913002" X-IronPort-AV: E=Sophos;i="6.25,217,1779174000"; d="scan'208";a="86913002" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Aug 2026 05:40:46 -0700 X-CSE-ConnectionGUID: IXBqr4ryRZai4F0hyvkySg== X-CSE-MsgGUID: 9pWBR3gdRkKnh5ei0jTecg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,217,1779174000"; d="scan'208";a="265329930" Received: from tejasupa-desk.iind.intel.com (HELO tejasupa-desk) ([10.190.239.37]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Aug 2026 05:40:45 -0700 From: Tejas Upadhyay To: intel-xe@lists.freedesktop.org Cc: himal.prasad.ghimiray@intel.com, Tejas Upadhyay Subject: [PATCH V15 08/14] drm/xe/vram: Add page offline data structures and lifecycle Date: Tue, 11 Aug 2026 18:10:12 +0530 Message-ID: <20260811124016.3614699-24-tejas.upadhyay@intel.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260811124016.3614699-16-tejas.upadhyay@intel.com> References: <20260811124016.3614699-16-tejas.upadhyay@intel.com> MIME-Version: 1.0 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_ttm_vram_offline_resource to track individual offlined VRAM pages, and extend xe_ttm_vram_mgr with offlined_pages/queued_pages lists and their counters. Initialize the lists in __xe_ttm_vram_mgr_init() and add xe_ttm_vram_free_bad_pages() to release all tracked pages during xe_ttm_vram_mgr_fini() teardown. Signed-off-by: Tejas Upadhyay --- drivers/gpu/drm/xe/xe_ttm_vram_mgr.c | 24 ++++++++++++++++++++ drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h | 26 ++++++++++++++++++++++ 2 files changed, 50 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c index 49eeec90a470..2813ae68325e 100644 --- a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c +++ b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c @@ -300,6 +300,24 @@ static const struct ttm_resource_manager_func xe_ttm_vram_mgr_func = { .debug = xe_ttm_vram_mgr_debug }; +static void xe_ttm_vram_free_bad_pages(struct drm_device *dev, struct xe_ttm_vram_mgr *mgr) +{ + struct xe_ttm_vram_offline_resource *pos, *n; + + list_for_each_entry_safe(pos, n, &mgr->offlined_pages, offlined_link) { + xe_ttm_vram_buddy_free(mgr, &pos->blocks, pos->used_visible_size); + list_del(&pos->offlined_link); + --mgr->n_offlined_pages; + kfree(pos); + } + list_for_each_entry_safe(pos, n, &mgr->queued_pages, queued_link) { + xe_ttm_vram_buddy_free(mgr, &pos->blocks, 0); + list_del(&pos->queued_link); + --mgr->n_queued_pages; + kfree(pos); + } +} + static void xe_ttm_vram_mgr_fini(struct drm_device *dev, void *arg) { struct xe_device *xe = to_xe_device(dev); @@ -311,6 +329,10 @@ static void xe_ttm_vram_mgr_fini(struct drm_device *dev, void *arg) if (ttm_resource_manager_evict_all(&xe->ttm, man)) return; + mutex_lock(&mgr->lock); + xe_ttm_vram_free_bad_pages(dev, mgr); + mutex_unlock(&mgr->lock); + WARN_ON_ONCE(mgr->visible_avail != mgr->visible_size); gpu_buddy_fini(&mgr->mm); @@ -338,6 +360,8 @@ int __xe_ttm_vram_mgr_init(struct xe_device *xe, struct xe_ttm_vram_mgr *mgr, err = drmm_mutex_init(&xe->drm, &mgr->lock); if (err) return err; + INIT_LIST_HEAD(&mgr->offlined_pages); + INIT_LIST_HEAD(&mgr->queued_pages); mgr->default_page_size = default_page_size; mgr->visible_size = io_size; mgr->visible_avail = io_size; diff --git a/drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h b/drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h index 9106da056b49..bdfdf6ec1218 100644 --- a/drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h +++ b/drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h @@ -19,6 +19,14 @@ struct xe_ttm_vram_mgr { struct ttm_resource_manager manager; /** @mm: DRM buddy allocator which manages the VRAM */ struct gpu_buddy mm; + /** @offlined_pages: List of offlined pages */ + struct list_head offlined_pages; + /** @n_offlined_pages: Number of offlined pages */ + u16 n_offlined_pages; + /** @queued_pages: List of queued pages */ + struct list_head queued_pages; + /** @n_queued_pages: Number of queued pages */ + u16 n_queued_pages; /** @visible_size: Proped size of the CPU visible portion */ u64 visible_size; /** @visible_avail: CPU visible portion still unallocated */ @@ -45,4 +53,22 @@ struct xe_ttm_vram_mgr_resource { unsigned long flags; }; +/** + * struct xe_ttm_vram_offline_resource - Tracks a single offlined VRAM page + */ +struct xe_ttm_vram_offline_resource { + /** @offlined_link: Link into mgr->offlined_pages */ + struct list_head offlined_link; + /** @queued_link: Link into mgr->queued_pages */ + struct list_head queued_link; + /** @blocks: Buddy blocks reserved for this page */ + struct list_head blocks; + /** @used_visible_size: CPU-visible bytes consumed */ + u64 used_visible_size; + /** @addr: Faulty DPA reported by HW */ + u64 addr; + /** @status: Reservation status (0=pending, 1=fail) */ + bool status; +}; + #endif -- 2.52.0