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 0377EC4332F for ; Fri, 25 Nov 2022 09:25:52 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B9D4910E214; Fri, 25 Nov 2022 09:25:50 +0000 (UTC) Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6A90410E23B; Fri, 25 Nov 2022 09:25:43 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id B4C31B829DA; Fri, 25 Nov 2022 09:25:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 88F61C433D7; Fri, 25 Nov 2022 09:25:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1669368340; bh=4rZWwSgzcPoyGbF2cU2dy6RGrUK8SvYQXJ5I/d301sE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kVySWLD4bfgwzmU3EDuWXrOr5+9K7omnfIJNLSB17LnaTYkzqW0IHAhgguS/yAbKI keOD3799zsdbZXqEi9jshPBqql3X6oRcsBdUjjBfuOxRb3EA+mZFoMZnhfJdfxwgqF ouBSnIJy3vWuQV+5doxD8yZCaPbDERk181QPGhkvLNgrzLOMLgOgbrp5kalCc8rgKg hlLnCB9AKVF24plNhevg7MpSpznv+QsBfAFe4ILSV2JuK38V03NMNMIavkS1+ch1v3 dmiTLMWVqHqIRUq23xNrqOYVBvCVKFUOdtFA0s2j21TR4yW9A33Lt0VxGewsjtwaEV 3VI8QO44l3Lbg== From: Lee Jones To: lee@kernel.org, arnd@arndb.de, akpm@linux-foundation.org, nathan@kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch, ndesaulniers@google.com, trix@redhat.com, harry.wentland@amd.com, sunpeng.li@amd.com, Rodrigo.Siqueira@amd.com, alexander.deucher@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com Subject: [PATCH 2/3] drm/amdgpu: Temporarily disable broken Clang builds due to blown stack-frame Date: Fri, 25 Nov 2022 09:25:16 +0000 Message-Id: <20221125092517.3074989-3-lee@kernel.org> X-Mailer: git-send-email 2.38.1.584.g0f3c55d4c2-goog In-Reply-To: <20221125092517.3074989-1-lee@kernel.org> References: <20221125092517.3074989-1-lee@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, llvm@lists.linux.dev, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" calculate_bandwidth() is presently broken on all !(X86_64 || SPARC64 || ARM64) architectures built with Clang (all released versions), whereby the stack frame gets blown up to well over 5k. This would cause an immediate kernel panic on most architectures. We'll revert this when the following bug report has been resolved: https://github.com/llvm/llvm-project/issues/41896. Suggested-by: Arnd Bergmann Signed-off-by: Lee Jones --- drivers/gpu/drm/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 34f5a092c99e7..1fa7b9760adb8 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -265,6 +265,7 @@ source "drivers/gpu/drm/radeon/Kconfig" config DRM_AMDGPU tristate "AMD GPU" + depends on BROKEN || !CC_IS_CLANG || !(X86_64 || SPARC64 || ARM64) depends on DRM && PCI && MMU select FW_LOADER select DRM_DISPLAY_DP_HELPER @@ -289,6 +290,12 @@ config DRM_AMDGPU help Choose this option if you have a recent AMD Radeon graphics card. + calculate_bandwidth() is presently broken on all !(X86_64 || SPARC64 || ARM64) + architectures built with Clang (all released versions), whereby the stack + frame gets blown up to well over 5k. This would cause an immediate kernel + panic on most architectures. We'll revert this when the following bug report + has been resolved: https://github.com/llvm/llvm-project/issues/41896. + If M is selected, the module will be called amdgpu. source "drivers/gpu/drm/amd/amdgpu/Kconfig" -- 2.38.1.584.g0f3c55d4c2-goog