From patchwork Mon Jul 25 09:25:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Gwan-gyeong Mun X-Patchwork-Id: 12927905 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 7B19EC43334 for ; Mon, 25 Jul 2022 09:27:06 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E7D3010E5B2; Mon, 25 Jul 2022 09:26:47 +0000 (UTC) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4058110EBF8; Mon, 25 Jul 2022 09:26:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1658741198; x=1690277198; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=fuLVuQn0JDB52+ACVwR20WUCsmorsWOPBStVotKwP44=; b=Ut/0r4fD+tyUuqERBEfz/d+/NSeb0x3Czny6i0IwdlPieE82celRku3Z FZmp76YFZk0BmY+lu/03H5vdxhJO+QvEfDwLlMhH+P9VybWsEP8Pj+xUb xARxvkQc9hVG7ePP7TPs+0Dqs2V1GMkKuhhidw7gII2ov4tU7VFfFhcDt Uvv04Tamf4IswfmpoJNI1MXa9UMBO4tWi5xQFVHvylpP1p2vfiU8M82iH liCKEb8URH82yosAFPk0Tykz/TmpLH20WkuAW37OU5GBn6taCzZuixTIU oin3nFfm8SCWE0f1jwTgimiQ05ofVaXpU6H5HZuN1j+izG3rN6+uWcABa Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10418"; a="268047840" X-IronPort-AV: E=Sophos;i="5.93,192,1654585200"; d="scan'208";a="268047840" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2022 02:26:37 -0700 X-IronPort-AV: E=Sophos;i="5.93,192,1654585200"; d="scan'208";a="926823873" Received: from abaruah-mobl.gar.corp.intel.com (HELO hades.ger.corp.intel.com) ([10.249.37.11]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2022 02:26:35 -0700 From: Gwan-gyeong Mun To: intel-gfx@lists.freedesktop.org Date: Mon, 25 Jul 2022 12:25:28 +0300 Message-Id: <20220725092528.1281487-8-gwan-gyeong.mun@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220725092528.1281487-1-gwan-gyeong.mun@intel.com> References: <20220725092528.1281487-1-gwan-gyeong.mun@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v5 7/7] drm/i915: Remove truncation warning for large objects X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: thomas.hellstrom@linux.intel.com, jani.nikula@intel.com, dri-devel@lists.freedesktop.org, chris@chris-wilson.co.uk, airlied@linux.ie, matthew.auld@intel.com, mchehab@kernel.org, nirmoy.das@intel.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Chris Wilson Having addressed the issues surrounding incorrect types for local variables and potential integer truncation in using the scatterlist API, we have closed all the loop holes we had previously identified with dangerously large object creation. As such, we can eliminate the warning put in place to remind us to complete the review. Signed-off-by: Chris Wilson Signed-off-by: Gwan-gyeong Mun Cc: Tvrtko Ursulin Cc: Brian Welty Cc: Matthew Auld Cc: Thomas Hellström Testcase: igt@gem_create@create-massive Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/4991 Reviewed-by: Nirmoy Das Reviewed-by: Mauro Carvalho Chehab Reviewed-by: Andrzej Hajda --- drivers/gpu/drm/i915/gem/i915_gem_object.h | 15 --------------- 1 file changed, 15 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h index 0cf31adbfd41..dd2762da332f 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h @@ -20,25 +20,10 @@ enum intel_region_id; -/* - * XXX: There is a prevalence of the assumption that we fit the - * object's page count inside a 32bit _signed_ variable. Let's document - * this and catch if we ever need to fix it. In the meantime, if you do - * spot such a local variable, please consider fixing! - * - * We can check for invalidly typed locals with typecheck(), see for example - * i915_gem_object_get_sg(). - */ -#define GEM_CHECK_SIZE_OVERFLOW(sz) \ - GEM_WARN_ON((sz) >> PAGE_SHIFT > INT_MAX) - static inline bool i915_gem_object_size_2big(u64 size) { struct drm_i915_gem_object *obj; - if (GEM_CHECK_SIZE_OVERFLOW(size)) - return true; - if (overflows_type(size, obj->base.size)) return true;