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 69EC2E7C4C9 for ; Wed, 4 Oct 2023 14:52:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242993AbjJDOwD (ORCPT ); Wed, 4 Oct 2023 10:52:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233583AbjJDOwB (ORCPT ); Wed, 4 Oct 2023 10:52:01 -0400 Received: from mail-ej1-x62b.google.com (mail-ej1-x62b.google.com [IPv6:2a00:1450:4864:20::62b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70308C1 for ; Wed, 4 Oct 2023 07:51:54 -0700 (PDT) Received: by mail-ej1-x62b.google.com with SMTP id a640c23a62f3a-9a645e54806so406386166b.0 for ; Wed, 04 Oct 2023 07:51:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1696431113; x=1697035913; 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=tPTU87oTEk7NeTsAm+0ZteUkCkrJ8u07q+xpjbSH+r0=; b=LJCH3Qx6PTDv6w+psOenJpB3IqyKGfV8sKXbONQeqjMwm2gg7d++Db6CtQlwJhuLMw yVGqpHwe0k79BQCouD0EuQhdrEwaULxnyYGHkhy7/rTm4BZWj1zIR6MObGKUVHtJiHwm xYVGcq8M0pNvSq8RC+ZssXNKAX4r2ejrGR2R899xNm0T5eYlGJ7jIYhhCNY/TJyaiXNg IYZRb0aejQsBbCcbTLSB/HbpWYJuPzh77f6Ifa4wpFh3zynFm58PyGuDIBxkCmeKjfan /+tw5toTuO46YaNG6v4yDWaEOZ4G98l6In4QaEMyFZKz0YMvQeE5XTNCobfYTFCYJzXS 71hQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696431113; x=1697035913; 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=tPTU87oTEk7NeTsAm+0ZteUkCkrJ8u07q+xpjbSH+r0=; b=u/4/XuXBeCCAcdbUwMw8oA3Se0Kl4b8xNewgw5r2cLiI8hrIPU0aNSQLAssK5i6uEx 2m4NZt7Vt93ejr6+eItl8G0Gh+pG4CjjXNOzIS0TF8AZsHKgrHXngQTjqVIqJ+vZ45Vs JQv4yi4AT7EeYMw2pEUzvKe8SqoJK7E857gGEbfAvpKd9XZfTDQ/oodMKQwp3VrRp70d RAJoKFvVtUFudRl5RER9aPwzqDQPHtwSgD7cV6PHzv2apUxb4Yf6Vy6C3ABDiW7NIdcF 6+e8y4oDWL4gjXTg5decbq4iTHs7FrXAEXUozQayyeIDDkC+SstCpCUZ2eGBUqaQ38D3 PnsA== X-Gm-Message-State: AOJu0YzNjRRUL3oUzSFRq393UiasqCENL0ryGswPahGKYthyqlmIMdDz 4JznyoXcvsvcaXX6a/WDRAs= X-Google-Smtp-Source: AGHT+IHasxx/eOa/cGvSMgjXT0UOfMcRpmNa0X0PQ2rfKcFxwtIwA520SvFJpFKfeSy81MIpsHGUcw== X-Received: by 2002:a17:906:144:b0:9ae:54c3:c627 with SMTP id 4-20020a170906014400b009ae54c3c627mr1923713ejh.71.1696431112895; Wed, 04 Oct 2023 07:51:52 -0700 (PDT) Received: from localhost.localdomain ([46.248.82.114]) by smtp.gmail.com with ESMTPSA id j26-20020a1709064b5a00b009a16975ee5asm2906307ejv.169.2023.10.04.07.51.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Oct 2023 07:51:52 -0700 (PDT) From: Uros Bizjak To: x86@kernel.org, linux-kernel@vger.kernel.org Cc: Uros Bizjak , Andy Lutomirski , Ingo Molnar , Nadav Amit , Brian Gerst , Denys Vlasenko , "H . Peter Anvin" , Linus Torvalds , Peter Zijlstra , Thomas Gleixner , Borislav Petkov , Josh Poimboeuf Subject: [PATCH 2/4] x86/percpu: Enable named address spaces with known compiler version Date: Wed, 4 Oct 2023 16:49:42 +0200 Message-ID: <20231004145137.86537-3-ubizjak@gmail.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231004145137.86537-1-ubizjak@gmail.com> References: <20231004145137.86537-1-ubizjak@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Enable named address spaces with known compiler version (GCC 13.1 and later) in order to avoid possible issues with named address spaces with older compilers. Set CC_HAS_NAMED_AS when the compiler satisfies version requirements and set USE_X86_SEG_SUPPORT to signal when segment qualifiers could be used. Cc: Andy Lutomirski Cc: Ingo Molnar Cc: Nadav Amit Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Borislav Petkov Cc: Josh Poimboeuf Signed-off-by: Uros Bizjak --- v1: Enable support with known compiler version --- arch/x86/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 66bfabae8814..3aa73f50dc05 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2388,6 +2388,13 @@ source "kernel/livepatch/Kconfig" endmenu +config CC_HAS_NAMED_AS + def_bool CC_IS_GCC && GCC_VERSION >= 130100 + +config USE_X86_SEG_SUPPORT + def_bool y + depends on CC_HAS_NAMED_AS && SMP + config CC_HAS_SLS def_bool $(cc-option,-mharden-sls=all) -- 2.41.0