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[209.132.180.67]) by mx.google.com with ESMTP id f31-v6si2162126plb.685.2018.01.25.08.17.34; Thu, 25 Jan 2018 08:17:48 -0800 (PST) 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; dkim=pass header.i=@amazon.co.uk header.s=amazon201209 header.b=krDRVcje; 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=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amazon.co.uk Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751241AbeAYQOj (ORCPT + 99 others); Thu, 25 Jan 2018 11:14:39 -0500 Received: from smtp-fw-4101.amazon.com ([72.21.198.25]:43462 "EHLO smtp-fw-4101.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750992AbeAYQOh (ORCPT ); Thu, 25 Jan 2018 11:14:37 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.co.uk; i=@amazon.co.uk; q=dns/txt; s=amazon201209; t=1516896877; x=1548432877; h=from:to:subject:date:message-id:in-reply-to:references; bh=p/2/AsPq9Ra/bdpTFeyL59UHg4bc+EYl+gi41YxMZPQ=; b=krDRVcjep8FOmq9iUz+aL9kF1hns35STKI8Wo0SgcFkE5GNnlS7pl3R+ oMn5M9SsKuSk75gqxilx6Aa0AnFgs3n1dd+ixASQetgOSM9WrmKjjXKP9 NyfsyPkvVfumu77HKZuCEGMeCVNj7z46NP3ywoE1bhW3ntNd4oWwwnixN I=; X-IronPort-AV: E=Sophos;i="5.46,412,1511827200"; d="scan'208";a="705292080" Received: from iad6-co-svc-p1-lb1-vlan3.amazon.com (HELO email-inbound-relay-2a-7c6d20a4.us-west-2.amazon.com) ([10.124.125.6]) by smtp-border-fw-out-4101.iad4.amazon.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 25 Jan 2018 16:14:33 +0000 Received: from uc8d3ff76b9bc5848a9cc.ant.amazon.com (pdx2-ws-svc-lb17-vlan3.amazon.com [10.247.140.70]) by email-inbound-relay-2a-7c6d20a4.us-west-2.amazon.com (8.14.7/8.14.7) with ESMTP id w0PGERNJ085185 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 25 Jan 2018 16:14:29 GMT Received: from uc8d3ff76b9bc5848a9cc.ant.amazon.com (localhost [127.0.0.1]) by uc8d3ff76b9bc5848a9cc.ant.amazon.com (8.15.2/8.15.2/Debian-3) with ESMTP id w0PGEQfS008040; Thu, 25 Jan 2018 16:14:26 GMT Received: (from dwmw@localhost) by uc8d3ff76b9bc5848a9cc.ant.amazon.com (8.15.2/8.15.2/Submit) id w0PGEOMs008038; Thu, 25 Jan 2018 16:14:24 GMT From: David Woodhouse To: arjan@linux.intel.com, tglx@linutronix.de, karahmed@amazon.de, x86@kernel.org, linux-kernel@vger.kernel.org, tim.c.chen@linux.intel.com, bp@alien8.de, peterz@infradead.org, pbonzini@redhat.com, ak@linux.intel.com, torvalds@linux-foundation.org, gregkh@linux-foundation.org, dave.hansen@intel.com, gnomes@lxorguk.ukuu.org.uk, ashok.raj@intel.com, mingo@kernel.org Subject: [PATCH v5 2/7] x86/cpufeatures: Add Intel feature bits for Speculation Control Date: Thu, 25 Jan 2018 16:14:10 +0000 Message-Id: <1516896855-7642-3-git-send-email-dwmw@amazon.co.uk> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1516896855-7642-1-git-send-email-dwmw@amazon.co.uk> References: <1516896855-7642-1-git-send-email-dwmw@amazon.co.uk> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add three feature bits exposed by new microcode on Intel CPUs for speculation control. Signed-off-by: David Woodhouse Reviewed-by: Greg Kroah-Hartman Reviewed-by: Borislav Petkov --- arch/x86/include/asm/cpufeatures.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 7b25cf3..0a51070 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -320,6 +320,9 @@ /* Intel-defined CPU features, CPUID level 0x00000007:0 (EDX), word 18 */ #define X86_FEATURE_AVX512_4VNNIW (18*32+ 2) /* AVX-512 Neural Network Instructions */ #define X86_FEATURE_AVX512_4FMAPS (18*32+ 3) /* AVX-512 Multiply Accumulation Single precision */ +#define X86_FEATURE_SPEC_CTRL (18*32+26) /* Speculation Control (IBRS + IBPB) */ +#define X86_FEATURE_STIBP (18*32+27) /* Single Thread Indirect Branch Predictors */ +#define X86_FEATURE_ARCH_CAPABILITIES (18*32+29) /* IA32_ARCH_CAPABILITIES MSR (Intel) */ /* * BUG word(s) -- 2.7.4