From patchwork Fri Jun 17 19:05:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Bob Beckett X-Patchwork-Id: 12885911 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 C4229C43334 for ; Fri, 17 Jun 2022 19:06:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6D12110F54D; Fri, 17 Jun 2022 19:05:56 +0000 (UTC) Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by gabe.freedesktop.org (Postfix) with ESMTPS id 267A210F32F; Fri, 17 Jun 2022 19:05:46 +0000 (UTC) Received: from hermes-devbox.fritz.box (82-71-8-225.dsl.in-addr.zen.co.uk [82.71.8.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bbeckett) by madras.collabora.co.uk (Postfix) with ESMTPSA id 79CA96601856; Fri, 17 Jun 2022 20:05:44 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1655492744; bh=AgP5Riz/FHb587iBL1vYiW/g4qmDc92BtRCaR0jjFGw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i0IJQ4CM1JVpElwf2AKhAy23FWvVZ30CQEKxXqA/ohJKbUAyoKnY/4qsB3LxifWKl +BUx8fo0BXRnHFUjAKUQJi946Y8wuLAIqKptm63nSm76kDiER5e2QvC5STkDH41aLo jX2tFaizBFg2BUwQ6l9jxS5vEA7tTmpwd93ygXKVhU1qAUH75fCvFa8F+iGZMxj/V7 iVAqDp5jDB1Jv0epMXdgk9KccLklx+jZkjHSbpkHB1BPrLJXi9jbWcaajIPzH8h2T5 N33fcSGQngUR2zdUK9wq6dmvcGeVaAThMuvEK6c1Xyh4cb4oNOm3Z81Thq0zPBlaCt Cz3/npceisA6w== From: Robert Beckett To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter Subject: [PATCH v6 06/10] drm/i915: sanitize mem_flags for stolen buffers Date: Fri, 17 Jun 2022 19:05:12 +0000 Message-Id: <20220617190516.2805572-7-bob.beckett@collabora.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220617190516.2805572-1-bob.beckett@collabora.com> References: <20220617190516.2805572-1-bob.beckett@collabora.com> MIME-Version: 1.0 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: , Cc: Robert Beckett , =?utf-8?q?Thomas_Hellstr?= =?utf-8?q?=C3=B6m?= , kernel@collabora.com, Matthew Auld , linux-kernel@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Stolen regions are not page backed or considered iomem. Prevent flags indicating such. This correctly prevents stolen buffers from attempting to directly map them. See i915_gem_object_has_struct_page() and i915_gem_object_has_iomem() usage for where it would break otherwise. Signed-off-by: Robert Beckett Reviewed-by: Thomas Hellström --- drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c index 675e9ab30396..81c67ca9edda 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c @@ -14,6 +14,7 @@ #include "gem/i915_gem_region.h" #include "gem/i915_gem_ttm.h" #include "gem/i915_gem_ttm_move.h" +#include "gem/i915_gem_stolen.h" #include "gt/intel_engine_pm.h" #include "gt/intel_gt.h" @@ -124,8 +125,9 @@ void i915_ttm_adjust_gem_after_move(struct drm_i915_gem_object *obj) obj->mem_flags &= ~(I915_BO_FLAG_STRUCT_PAGE | I915_BO_FLAG_IOMEM); - obj->mem_flags |= i915_ttm_cpu_maps_iomem(bo->resource) ? I915_BO_FLAG_IOMEM : - I915_BO_FLAG_STRUCT_PAGE; + if (!i915_gem_object_is_stolen(obj)) + obj->mem_flags |= i915_ttm_cpu_maps_iomem(bo->resource) ? I915_BO_FLAG_IOMEM : + I915_BO_FLAG_STRUCT_PAGE; if (!obj->ttm.cache_level_override) { cache_level = i915_ttm_cache_level(to_i915(bo->base.dev),