Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp1548499ybl; Fri, 23 Aug 2019 23:08:03 -0700 (PDT) X-Google-Smtp-Source: APXvYqz+D6iyuIafcHusoYp1enQDS1kuPFg8+/OmSLb+MMwBGFNnej5NFz1yjkhN6IvcqLib1rLP X-Received: by 2002:a17:902:3003:: with SMTP id u3mr8514841plb.161.1566626883624; Fri, 23 Aug 2019 23:08:03 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1566626883; cv=none; d=google.com; s=arc-20160816; b=SlaTAZrX7CQ9Ye6KKVE9BU3rvhRLqqJ0hs+FCacIatcN6ueauDk+LshYp22Pz1waWH oRnTigoU3CF7tifWfAsc7BYgn6z4/xFZNpgNFheGPfQgUQPdWwSVEsoAXxFi2h/G+VTU s3Sr2fAKuBnvvij4WeSho9hLLoHZZpQ5JVLAvSs/mjJKYcNtFXbRm6afJ/bhdeHUO6oy GpPf7Vbtj1uJl++dBPxnEXASjv2J5EjvztSBUat/eVt6ZoChXQA5d4zJUy7szYNS9dIu zds3KeZRbaEeJmN/sBSMptgYUFpD77pPBTqFtaDZd2FZQxX7XpXZKqlpfniEkvWNc25/ wemw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from; bh=rgzPUBWWFXcEB0kpmGg07sbQ4NrSDKWt+6h0aUZjV2I=; b=bAN60BchivSyPhpTsa/I+4xvJrkbQrtP/9sv764cBp8Hu582p+RqdXejqjmE5w9FjY i7c6ao2EXoNq5XBlcbBO+3V04srel3Kt2IFawKQaqtCFX1hZlMxFFeXZaa+Fy0aNpgNW rdqzzPyEtZX87sbTCJW8RWbRLthXQqV4KN1x7VeEPn23qkUmyXWkXrNgAUrVSN31kPD5 h+1gXeVSHcC3mcT6jFeMfHRo9zWbm4CRCSsmEhEQVYahrdyCexCPGCu0L4OqwPD55YGV 6lwUKYEKVuTXzVTGeIDAHqfOoD70gK+IT7RogcSWAKgB4QtDnqesCnoMXpcMVz0tis3K FKBw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=NONE dis=NONE) header.from=vmware.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id d21si4250340pls.146.2019.08.23.23.07.48; Fri, 23 Aug 2019 23:08:03 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=NONE dis=NONE) header.from=vmware.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727151AbfHXGFQ (ORCPT + 99 others); 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-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