From patchwork Wed Aug 24 08:45:14 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: 12953064 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 1B5B5C00140 for ; Wed, 24 Aug 2022 08:46:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 871471125F9; Wed, 24 Aug 2022 08:46:18 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id A4BED10F09C; Wed, 24 Aug 2022 08:45:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1661330755; x=1692866755; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=rIBijWYDCuJCpKPJprGFsO7FPm8DX5/N35/ZVITEqGo=; b=iy911PyXMISMCafGEqr2Op9uXaOpb7ohrL6EDLhA6Ssq5YCiPQkXOZGy cgtC09XYIRmltQpLuTUrwFFFKIErdss+zppdKCc3VUKPEpsSUwKSRWz5g hUVz7m9MF2Sp8krPb2GnhsA4PazUZAW4uuXQaVDIEL/A6h6xmYoJG3wmg /zS4xJOsM+fQGy4PDDbW+LDwv3JoAF1A93c72yyLj/WBFxKYWqZnjcDZR bgPG4NBJwHobvwmBpq+TWH9iCO+SAX2h4FvtvEwr3voSWoNhpKIioXPCJ km9St1ZlepWi3w+RmKnobcaA0RemHJpn/7tSkiVHJPwRtEg/ejddEjKqu Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10448"; a="291473740" X-IronPort-AV: E=Sophos;i="5.93,260,1654585200"; d="scan'208";a="291473740" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Aug 2022 01:45:55 -0700 X-IronPort-AV: E=Sophos;i="5.93,260,1654585200"; d="scan'208";a="785554080" Received: from yuhsuanc-mobl.gar.corp.intel.com (HELO paris.amr.corp.intel.com) ([10.254.38.238]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Aug 2022 01:45:52 -0700 From: Gwan-gyeong Mun To: intel-gfx@lists.freedesktop.org Subject: [PATCH v9 8/8] drm/i915: Remove truncation warning for large objects Date: Wed, 24 Aug 2022 17:45:14 +0900 Message-Id: <20220824084514.2261614-9-gwan-gyeong.mun@intel.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220824084514.2261614-1-gwan-gyeong.mun@intel.com> References: <20220824084514.2261614-1-gwan-gyeong.mun@intel.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: thomas.hellstrom@linux.intel.com, mauro.chehab@linux.intel.com, andi.shyti@linux.intel.com, keescook@chromium.org, jani.nikula@intel.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, chris@chris-wilson.co.uk, airlied@linux.ie, andrzej.hajda@intel.com, matthew.auld@intel.com, intel-gfx-trybot@lists.freedesktop.org, mchehab@kernel.org, nirmoy.das@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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;