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 1A4BBC10DC3 for ; Sun, 3 Dec 2023 22:12:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234012AbjLCWME (ORCPT ); Sun, 3 Dec 2023 17:12:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40858 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233951AbjLCWL7 (ORCPT ); Sun, 3 Dec 2023 17:11:59 -0500 Received: from mail-wm1-x32e.google.com (mail-wm1-x32e.google.com [IPv6:2a00:1450:4864:20::32e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E26B1D5 for ; Sun, 3 Dec 2023 14:12:05 -0800 (PST) Received: by mail-wm1-x32e.google.com with SMTP id 5b1f17b1804b1-40c0a03eb87so6160455e9.3 for ; Sun, 03 Dec 2023 14:12:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701641524; x=1702246324; 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=DIsCrkxdL3+P74omPdT684tv0k/I5V1A9sE1nd9EGUY=; b=cxQB0EMBcScTJ6+qad4ZPyrEbXWTVSE34X64H68hHkuTFibL2c89FwAfA9l7li6v/Z QSZ6b5e6L7yvGDJ7ZcAYLW1yvE/aQsk9LHqhhWg5xzyd7++XMlBUbeD0I1sIDW4ccrk0 x7Sj9yK003j6F/bnZhWZ75UiBB6kxnn6hQ95iq9fnwukIw/iyFAKV2F7+IPqj+1Kdh6z vvPqaWPcg4cZ4S0Ptj//0Hayi/Arg50R7wfogiNFTwrtV0JSSy/T7J0hpcCW3Q1SzCfo sTMvntbLff/xSlo9N3VYNrNNMQODOocB9AvAAiZwxy6YsabwX03R9VMuBxD4VfVx8Yr4 jsHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701641524; x=1702246324; 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=DIsCrkxdL3+P74omPdT684tv0k/I5V1A9sE1nd9EGUY=; b=uymJj9+llHjODyxmH7974hEhuX4aMMQVd+SgEh8JfFKiBsUyQeeNeGUXAv7AXoDmJe zrw49hln75GZJk8AMw475H/oGSZbglExk3GOB6bymc/orraRKM+fACkhS723c9pUnLZi cbU6N7vL3hEBXLuXPcDCRqsK2v5IzlvW7syqy90pLbqcArxBucULQUlGE/GgFE8gybsO PZY17NGqZELRIRCABweksQmrsvrtmXHQB5nj4nO2Njfj4pkZ0dUTC7XBxmU+KtU33Jl2 Rv8FPGJ78w01DuLiHpGwJvdGhXdNkTlM3t7OQhwTwuVC+C1AXbfTHDymyykDILZza51f P/Tg== X-Gm-Message-State: AOJu0YxcIdE84H3D9H1+mkzFPxHkkjH0k81zWfCU1KyQy6diwwBc5UxS LY66/x1zbkOdLlGeVLEMvVg= X-Google-Smtp-Source: AGHT+IFNOQfipqO6R9CgGxonCq6Hk37UjxpbaasEIFcin3RUO4wj4xzTs3ZmVl4E4+EMrhj7OOJlJA== X-Received: by 2002:a05:600c:4f87:b0:40b:5f03:b3b1 with SMTP id n7-20020a05600c4f8700b0040b5f03b3b1mr978076wmq.211.1701641524194; Sun, 03 Dec 2023 14:12:04 -0800 (PST) Received: from localhost.localdomain ([46.248.82.114]) by smtp.gmail.com with ESMTPSA id ay10-20020a05600c1e0a00b0040b397787d3sm16589181wmb.24.2023.12.03.14.12.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Dec 2023 14:12:04 -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 3/3] x86/percpu: Avoid sparse warning with cast to named address space Date: Sun, 3 Dec 2023 23:10:54 +0100 Message-ID: <20231203221151.794615-3-ubizjak@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231203221151.794615-1-ubizjak@gmail.com> References: <20231203221151.794615-1-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 7f6e978e21b1..07ee2aedb1f6 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