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 X-Spam-Level: X-Spam-Status: No, score=-8.6 required=3.0 tests=DATE_IN_PAST_06_12, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CACD1C3A59E for ; Sat, 24 Aug 2019 06:05:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 81F902133F for ; Sat, 24 Aug 2019 06:05:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727223AbfHXGFQ (ORCPT ); Sat, 24 Aug 2019 02:05:16 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:35189 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725777AbfHXGFP (ORCPT ); Sat, 24 Aug 2019 02:05:15 -0400 Received: by mail-pf1-f193.google.com with SMTP id d85so8059578pfd.2 for ; Fri, 23 Aug 2019 23:05:14 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=rgzPUBWWFXcEB0kpmGg07sbQ4NrSDKWt+6h0aUZjV2I=; b=RWZMQphaGQocrYOY/Me10PN/0/PPNnw2U0Uj4hP7w1HzN0DbA6NGLwy16E0ZYcfZIV MqcXJkljhzOggryLxVan+8qSgVMouCda2Zjh8zvYUmGoeF7jFFkoXnssvvu54bXNVz41 F+SWo8DbUJdZcbhz91rNmFM59MGE02NMK6R7EBw0GVqMUl5xyIU+ew80PTKDiMsyFh3F trJfb25z0zHO5KWjdnrnCuGqHzljuWeCpAyV6G8s0afzTlOJSw/uewpwpYteM3f0RsWp X8Yq/DvodQiENJrbbt0Wm2ULCnwB+o4nJ9uR8cwhcubZBv0fQvZ0jwAgqvvA5ADzscQA rIfw== X-Gm-Message-State: APjAAAXkbLc6e/4pFlEYGKTmUtNShzcQOWifEMNGBgXt8MDzFC02o6Kj LkoWs/o87aeEmut1ttlBv5U= X-Google-Smtp-Source: APXvYqy2i6o4571WTiXoJ3Ap8qsqvTok7hBsXzd214XO87Jg/kYicSMTHgMEt8aySQzQpMLzuEq50g== X-Received: by 2002:a62:754a:: with SMTP id q71mr9127824pfc.15.1566626714033; Fri, 23 Aug 2019 23:05:14 -0700 (PDT) Received: from sc2-haas01-esx0118.eng.vmware.com ([66.170.99.1]) by smtp.gmail.com with ESMTPSA id w2sm4300882pjr.27.2019.08.23.23.05.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Aug 2019 23:05:12 -0700 (PDT) From: Nadav Amit To: Peter Zijlstra Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Thomas Gleixner , Thomas Garnier , Ingo Molnar , Nadav Amit Subject: [PATCH 1/7] compiler: Report x86 segment support Date: Fri, 23 Aug 2019 15:44:18 -0700 Message-Id: <20190823224424.15296-2-namit@vmware.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190823224424.15296-1-namit@vmware.com> References: <20190823224424.15296-1-namit@vmware.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org GCC v6+ supports x86 segment qualifiers (__seg_gs and __seg_fs). Define COMPILER_HAS_X86_SEG_SUPPORT when it is supported. Signed-off-by: Nadav Amit --- include/linux/compiler-gcc.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index d7ee4c6bad48..5967590a18c6 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -149,6 +149,10 @@ #define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1 #endif +#if GCC_VERSION >= 60000 +#define COMPILER_HAS_X86_SEG_SUPPORT 1 +#endif + /* * Turn individual warnings and errors on and off locally, depending * on version. -- 2.17.1