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 81F73EA7963 for ; Thu, 5 Feb 2026 04:19:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 471AE10E7A7; Thu, 5 Feb 2026 04:19:28 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="mccnkZti"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) by gabe.freedesktop.org (Postfix) with ESMTPS id CD6DA10E212; Thu, 5 Feb 2026 04:19:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1770265167; x=1801801167; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=WSIwdzS6CjBeSAnVkaOWaWwvfob3UlAErMPa099WXks=; b=mccnkZtil6poRf/nOX/zT0+egsxcQLe+gFMBcQBVVE6ydPDLVcugo8sm 1dW+rxxQ407nRlHshVkKXOY/uPiUswiELkKDRhjBSxb90VRSYHr/h0Nby 9UzNY5oDuukIhREsziAlooqzmVPf/9CbC9HMy7cqWHTiGMhLStEJrNnxI SOajoL5kruE5UpgqC8gfzO60CeW0F9nBJ/70HtxHEi11LmebXhp6O0/1R 0R31SeP/WzXB7tMVppsH/TtistAHr7Qlc5/HTY6zgYDZhkJAq8oEInyOW Dd188kBR8P3rkBh3bVkg1iQ+/DEKpLoevibolALkLnO3/4TpKecgobygb Q==; X-CSE-ConnectionGUID: WIwXd6V6TBmGR3yh3Z/IzA== X-CSE-MsgGUID: ngAkgOt2SB28HPjCuJQlYA== X-IronPort-AV: E=McAfee;i="6800,10657,11691"; a="96914165" X-IronPort-AV: E=Sophos;i="6.21,273,1763452800"; d="scan'208";a="96914165" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Feb 2026 20:19:26 -0800 X-CSE-ConnectionGUID: jR0lPex7Re2zEexvT9Nydg== X-CSE-MsgGUID: Wlj+f5heTFWdG6A8e4G9YQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,273,1763452800"; d="scan'208";a="210453869" Received: from lstrano-desk.jf.intel.com ([10.54.39.91]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Feb 2026 20:19:26 -0800 From: Matthew Brost To: intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: leonro@nvidia.com, jgg@ziepe.ca, francois.dugast@intel.com, thomas.hellstrom@linux.intel.com, himal.prasad.ghimiray@intel.com Subject: [PATCH v4 1/4] drm/pagemap: Add helper to access zone_device_data Date: Wed, 4 Feb 2026 20:19:18 -0800 Message-Id: <20260205041921.3781292-2-matthew.brost@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260205041921.3781292-1-matthew.brost@intel.com> References: <20260205041921.3781292-1-matthew.brost@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Francois Dugast This new helper helps ensure all accesses to zone_device_data use the correct API whether the page is part of a folio or not. Suggested-by: Matthew Brost Reviewed-by: Matthew Brost Signed-off-by: Francois Dugast --- v2: - Move to drm_pagemap.h, stick to folio_zone_device_data (Matthew Brost) - Return struct drm_pagemap_zdd * (Matthew Brost) drivers/gpu/drm/drm_gpusvm.c | 7 +++++-- drivers/gpu/drm/drm_pagemap.c | 21 ++++++++++++--------- include/drm/drm_pagemap.h | 14 ++++++++++++++ 3 files changed, 31 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/drm_gpusvm.c b/drivers/gpu/drm/drm_gpusvm.c index 871fcccd128a..4b8130a4ce95 100644 --- a/drivers/gpu/drm/drm_gpusvm.c +++ b/drivers/gpu/drm/drm_gpusvm.c @@ -1488,12 +1488,15 @@ int drm_gpusvm_get_pages(struct drm_gpusvm *gpusvm, order = drm_gpusvm_hmm_pfn_to_order(pfns[i], i, npages); if (is_device_private_page(page) || is_device_coherent_page(page)) { + struct drm_pagemap_zdd *__zdd = + drm_pagemap_page_zone_device_data(page); + if (!ctx->allow_mixed && - zdd != page->zone_device_data && i > 0) { + zdd != __zdd && i > 0) { err = -EOPNOTSUPP; goto err_unmap; } - zdd = page->zone_device_data; + zdd = __zdd; if (pagemap != page_pgmap(page)) { if (pagemap) { err = -EOPNOTSUPP; diff --git a/drivers/gpu/drm/drm_pagemap.c b/drivers/gpu/drm/drm_pagemap.c index 38eca94f01a1..fbd69f383457 100644 --- a/drivers/gpu/drm/drm_pagemap.c +++ b/drivers/gpu/drm/drm_pagemap.c @@ -244,7 +244,7 @@ static int drm_pagemap_migrate_map_pages(struct device *dev, order = folio_order(folio); if (is_device_private_page(page)) { - struct drm_pagemap_zdd *zdd = page->zone_device_data; + struct drm_pagemap_zdd *zdd = drm_pagemap_page_zone_device_data(page); struct drm_pagemap *dpagemap = zdd->dpagemap; struct drm_pagemap_addr addr; @@ -315,7 +315,7 @@ static void drm_pagemap_migrate_unmap_pages(struct device *dev, goto next; if (is_zone_device_page(page)) { - struct drm_pagemap_zdd *zdd = page->zone_device_data; + struct drm_pagemap_zdd *zdd = drm_pagemap_page_zone_device_data(page); struct drm_pagemap *dpagemap = zdd->dpagemap; dpagemap->ops->device_unmap(dpagemap, dev, pagemap_addr[i]); @@ -603,7 +603,8 @@ int drm_pagemap_migrate_to_devmem(struct drm_pagemap_devmem *devmem_allocation, pages[i] = NULL; if (src_page && is_device_private_page(src_page)) { - struct drm_pagemap_zdd *src_zdd = src_page->zone_device_data; + struct drm_pagemap_zdd *src_zdd = + drm_pagemap_page_zone_device_data(src_page); if (page_pgmap(src_page) == pagemap && !mdetails->can_migrate_same_pagemap) { @@ -725,8 +726,8 @@ static int drm_pagemap_migrate_populate_ram_pfn(struct vm_area_struct *vas, goto next; if (fault_page) { - if (src_page->zone_device_data != - fault_page->zone_device_data) + if (drm_pagemap_page_zone_device_data(src_page) != + drm_pagemap_page_zone_device_data(fault_page)) goto next; } @@ -1067,7 +1068,7 @@ static int __drm_pagemap_migrate_to_ram(struct vm_area_struct *vas, void *buf; int i, err = 0; - zdd = page->zone_device_data; + zdd = drm_pagemap_page_zone_device_data(page); if (time_before64(get_jiffies_64(), zdd->devmem_allocation->timeslice_expiration)) return 0; @@ -1150,7 +1151,9 @@ static int __drm_pagemap_migrate_to_ram(struct vm_area_struct *vas, */ static void drm_pagemap_folio_free(struct folio *folio) { - drm_pagemap_zdd_put(folio->page.zone_device_data); + struct page *page = folio_page(folio, 0); + + drm_pagemap_zdd_put(drm_pagemap_page_zone_device_data(page)); } /** @@ -1166,7 +1169,7 @@ static void drm_pagemap_folio_free(struct folio *folio) */ static vm_fault_t drm_pagemap_migrate_to_ram(struct vm_fault *vmf) { - struct drm_pagemap_zdd *zdd = vmf->page->zone_device_data; + struct drm_pagemap_zdd *zdd = drm_pagemap_page_zone_device_data(vmf->page); int err; err = __drm_pagemap_migrate_to_ram(vmf->vma, @@ -1232,7 +1235,7 @@ EXPORT_SYMBOL_GPL(drm_pagemap_devmem_init); */ struct drm_pagemap *drm_pagemap_page_to_dpagemap(struct page *page) { - struct drm_pagemap_zdd *zdd = page->zone_device_data; + struct drm_pagemap_zdd *zdd = drm_pagemap_page_zone_device_data(page); return zdd->devmem_allocation->dpagemap; } diff --git a/include/drm/drm_pagemap.h b/include/drm/drm_pagemap.h index 2baf0861f78f..14e1db564c25 100644 --- a/include/drm/drm_pagemap.h +++ b/include/drm/drm_pagemap.h @@ -4,6 +4,7 @@ #include #include +#include #include #define NR_PAGES(order) (1U << (order)) @@ -341,6 +342,19 @@ struct drm_pagemap_migrate_details { u32 source_peer_migrates : 1; }; +/** + * drm_pagemap_page_zone_device_data() - Page to zone_device_data + * @page: Pointer to the page + * + * Return: Page's zone_device_data + */ +static inline struct drm_pagemap_zdd *drm_pagemap_page_zone_device_data(struct page *page) +{ + struct folio *folio = page_folio(page); + + return folio_zone_device_data(folio); +} + #if IS_ENABLED(CONFIG_ZONE_DEVICE) int drm_pagemap_migrate_to_devmem(struct drm_pagemap_devmem *devmem_allocation, -- 2.34.1