From patchwork Thu Apr 21 18:49:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bob Beckett X-Patchwork-Id: 12822256 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 145A3C433EF for ; Thu, 21 Apr 2022 18:50:19 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A515610E984; Thu, 21 Apr 2022 18:50:04 +0000 (UTC) Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5D13310E979; Thu, 21 Apr 2022 18:50:00 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: bbeckett) with ESMTPSA id 914311F45CEC DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1650566999; bh=26RwCYq5kVMLB9u5WcfwsPXM6g66xnWj0V4XY37l3u8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GJYFGwaD9y6397xd6S/316i09OD0GlhbJC3Po8++kfO6osECXCPP9h8OhYS32OLVI T5kJgZurHxBx9RDbHF/ljN4tRcsmyXnWPCUisYUwKa4rbkgrbjL6z9PW/8+/baZvYK WQqatHIpqhU/pBBEWKnVrategu2MqZwe368XzmPGzp54LcyWmEnvQy4TihWqbhgvrq sozkGTWlR5B00FuxIQVOyXmLcDwc8MKnWuI0841+SqLKmyiTCc1C+UT/Cww1Y34/IY 8BQ/Ehf9mN3VOuwmpsTw5MMlk/AMAUGsLlSOWF4YllJLd/o0bc8tAci/JhD3qhd+hz vt48Ykw0PPn8Q== 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 v4 2/6] drm/i915: sanitize mem_flags for stolen buffers Date: Thu, 21 Apr 2022 18:49:37 +0000 Message-Id: <20220421184941.428639-3-bob.beckett@collabora.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220421184941.428639-1-bob.beckett@collabora.com> References: <20220421184941.428639-1-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?= , 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 --- drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c | 5 +++-- 1 file changed, 3 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 358f8a1a30ce..9fe8132de3b2 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c @@ -122,8 +122,9 @@ 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 (obj->mm.region->id != INTEL_REGION_STOLEN_SMEM) + obj->mem_flags |= i915_ttm_cpu_maps_iomem(bo->resource) ? I915_BO_FLAG_IOMEM : + I915_BO_FLAG_STRUCT_PAGE; cache_level = i915_ttm_cache_level(to_i915(bo->base.dev), bo->resource, bo->ttm);