From nobody Fri Sep 19 13:42:45 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6E143C4167B for ; Fri, 25 Nov 2022 09:25:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229833AbiKYJZs (ORCPT ); Fri, 25 Nov 2022 04:25:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40644 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229732AbiKYJZo (ORCPT ); Fri, 25 Nov 2022 04:25:44 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1DD102B19A for ; Fri, 25 Nov 2022 01:25:43 -0800 (PST) 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 A8393B829D5 for ; 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 Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org 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: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" calculate_bandwidth() is presently broken on all !(X86_64 || SPARC64 || ARM= 64) 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 repo= rt 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" =20 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. =20 + calculate_bandwidth() is presently broken on all !(X86_64 || SPARC64 ||= ARM64) + architectures built with Clang (all released versions), whereby the sta= ck + frame gets blown up to well over 5k. This would cause an immediate ker= nel + 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. =20 source "drivers/gpu/drm/amd/amdgpu/Kconfig" --=20 2.38.1.584.g0f3c55d4c2-goog