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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9FF11C07E97 for ; Sun, 3 Dec 2023 23:20:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234004AbjLCXUm (ORCPT ); Sun, 3 Dec 2023 18:20:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54670 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234087AbjLCXUh (ORCPT ); Sun, 3 Dec 2023 18:20:37 -0500 Received: from mail-wm1-x333.google.com (mail-wm1-x333.google.com [IPv6:2a00:1450:4864:20::333]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 92184FC for ; Sun, 3 Dec 2023 15:20:43 -0800 (PST) Received: by mail-wm1-x333.google.com with SMTP id 5b1f17b1804b1-40c0a0d068bso5756095e9.3 for ; Sun, 03 Dec 2023 15:20:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701645642; x=1702250442; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=QOzPbwmzOzmza0UhjuLR6+wHBK/5W4fSzHoOkFgrGaI=; b=iO6iB61NJAQdg59dTUY8uR3gqgylC10D5BcGmY5dilrWiasKGM2xNOn8FtoNKjn5fg BAw/uRbiCNWIIVhoh3NWe3drGcIue2nGjFrkpebtAEaSkRgokMnE2NKQhMJ7nn5KhzIU qiLb+GpExiRhLvhvl6xF+uuOhnvspEDlwbMa6qkSyR7Qsu1X7J2+0j8sON1o7Xo+JE84 Oz/Sv6PChKgFAFz/LoCu8z19ObDfezyvrhnqyUAsRTUHqnErNEg36xPs8xRBqtfB9ei2 8HmEKYE80H0Mnw7msV7U2zOfg23M+d0TbJQR2vxTJ2VToH5RBKimjTiKkblkEnGTaUME JA5Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701645642; x=1702250442; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=QOzPbwmzOzmza0UhjuLR6+wHBK/5W4fSzHoOkFgrGaI=; b=E27gU1SlTkNEkB+Aae1IXXwWwl9FIBsJ2EOsrObd2i8SoQi7N+znpuwnUXCm+4iwpH SOM8t80pQhjLFSHQHNQlESxQKm2ieGgWw4ONr/6WmhXcEqL7OOSwGDEzxpGK2GzKryRr 2KMaLYiGEYr86pYp45hdmilINgDBO5FKO5trSIU3ITHOm1v7IJtic6tlA7saMyWlBgYc Dc47f2lLCc/hQj3NSkFIZjH5fRlFR2rwUi5U8MntuDr4CoBCiFqAAX7q+fb9yvXqn5eZ a/8JE/LswgJvIjMNgqiopurPD/Um5eP+Bma48tpwZxJFhwuOcdjR+Wv+qxKA4wH8d9Nl RRng== X-Gm-Message-State: AOJu0Yw93OD7XSzVDg9tvw1q+vekegT3HS01+fJF7CioDJreP0JKy/fz iP0CULkpPN4xEnTYKvUtFp4= X-Google-Smtp-Source: AGHT+IGrqpvv/BAvlagb2kPjUCAZBWMVaIyCYV5jP+dxrQoQuAd8R3T0ju1WMvFVsKLcND7SC0zHNw== X-Received: by 2002:a05:600c:5008:b0:40b:5e22:985 with SMTP id n8-20020a05600c500800b0040b5e220985mr2331500wmr.116.1701645641790; Sun, 03 Dec 2023 15:20:41 -0800 (PST) Received: from localhost.localdomain ([46.248.82.114]) by smtp.gmail.com with ESMTPSA id o15-20020a05600c510f00b004064cd71aa8sm11566222wms.34.2023.12.03.15.20.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Dec 2023 15:20:41 -0800 (PST) From: Uros Bizjak To: x86@kernel.org, linux-kernel@vger.kernel.org Cc: Uros Bizjak , kernel test robot , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" Subject: [PATCH -tip v2 3/3] x86/percpu: Avoid sparse warning with cast to named address space Date: Mon, 4 Dec 2023 00:19:40 +0100 Message-ID: <20231203232017.994963-3-ubizjak@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231203232017.994963-1-ubizjak@gmail.com> References: <20231203232017.994963-1-ubizjak@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently sparse does not know about __seg_fs and __seg_fs named address space qualifiers. Avoid thousands of warnings about unexpected keyword at the end of cast operator by removing named address space qualifier from __my_cpu_type() when __CHECKER__ is defined. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202310080853.UhMe5iWa-lkp@intel.com/ Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: "H. Peter Anvin" Signed-off-by: Uros Bizjak --- arch/x86/include/asm/percpu.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h index 3859abad19ec..cc4212d1491e 100644 --- a/arch/x86/include/asm/percpu.h +++ b/arch/x86/include/asm/percpu.h @@ -96,6 +96,15 @@ #endif /* CONFIG_SMP */ +/* + * FIXME: Drop this hack once sparse learns how to ignore + * __seg_fs and __seg_gs named address space qualifiers. + */ +#ifdef __CHECKER__ +#undef __percpu_seg_override +#define __percpu_seg_override +#endif + #define __my_cpu_type(var) typeof(var) __percpu_seg_override #define __my_cpu_ptr(ptr) (__my_cpu_type(*ptr) *)(uintptr_t)(ptr) #define __my_cpu_var(var) (*__my_cpu_ptr(&var)) -- 2.42.0