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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 E8E5BC7618F for ; Wed, 24 Jul 2019 19:27:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BFC5D218EA for ; Wed, 24 Jul 2019 19:27:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563996451; bh=v3MjKObhyjpXhE1fPrp9pGxjjW+gNYX6LJYKcyoeLh4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=pcvupwUso63tmyC2iMgfj/TobftnyiVvvPNhwtiJKIP5YkHL35cpm4PmROzjqWqS2 9A0f/QEe9lCJ/F+QJYFtCSSQlh/FCJX0mXJB0bKgmZey5EG04Se0bT6SVJghk83gvn /7+JT7AmhrbOWB9lqPdJQjgJeoMqKiuIN+Wjx8u4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388122AbfGXT1a (ORCPT ); Wed, 24 Jul 2019 15:27:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:45236 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727195AbfGXT13 (ORCPT ); Wed, 24 Jul 2019 15:27:29 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 45334229F4; Wed, 24 Jul 2019 19:27:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563996448; bh=v3MjKObhyjpXhE1fPrp9pGxjjW+gNYX6LJYKcyoeLh4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eHv/xLdOjlqst6gp4nJtg++H+5a7xFKnPzqSY8MnpgAk8Z0iMXtueBnzOQltaHHL2 o4ZES4DZtIefm0/Y8oqIsRhxp7hU5c7c3E9dTDLGkU3pclN0qXdx9cd9o0pTy1W2ic 25n5JC3OV64tZwGhEPOngBDQpkk+lRfpGjrsW/MA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Aaron Lewis , Borislav Petkov , Jim Mattson , Fenghua Yu , Frederic Weisbecker , "H. Peter Anvin" , Ingo Molnar , Konrad Rzeszutek Wilk , marcorr@google.com, Peter Feiner , pshier@google.com, Robert Hoo , Thomas Gleixner , Thomas Lendacky , x86-ml , Sasha Levin Subject: [PATCH 5.2 100/413] x86/cpufeatures: Add FDP_EXCPTN_ONLY and ZERO_FCS_FDS Date: Wed, 24 Jul 2019 21:16:31 +0200 Message-Id: <20190724191742.316204840@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190724191735.096702571@linuxfoundation.org> References: <20190724191735.096702571@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit cbb99c0f588737ec98c333558922ce47e9a95827 ] Add the CPUID enumeration for Intel's de-feature bits to accommodate passing these de-features through to kvm guests. These de-features are (from SDM vol 1, section 8.1.8): - X86_FEATURE_FDP_EXCPTN_ONLY: If CPUID.(EAX=07H,ECX=0H):EBX[bit 6] = 1, the data pointer (FDP) is updated only for the x87 non-control instructions that incur unmasked x87 exceptions. - X86_FEATURE_ZERO_FCS_FDS: If CPUID.(EAX=07H,ECX=0H):EBX[bit 13] = 1, the processor deprecates FCS and FDS; it saves each as 0000H. Signed-off-by: Aaron Lewis Signed-off-by: Borislav Petkov Reviewed-by: Jim Mattson Cc: Fenghua Yu Cc: Frederic Weisbecker Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Konrad Rzeszutek Wilk Cc: marcorr@google.com Cc: Peter Feiner Cc: pshier@google.com Cc: Robert Hoo Cc: Thomas Gleixner Cc: Thomas Lendacky Cc: x86-ml Link: https://lkml.kernel.org/r/20190605220252.103406-1-aaronlewis@google.com Signed-off-by: Sasha Levin --- arch/x86/include/asm/cpufeatures.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 75f27ee2c263..1017b9c7dfe0 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -239,12 +239,14 @@ #define X86_FEATURE_BMI1 ( 9*32+ 3) /* 1st group bit manipulation extensions */ #define X86_FEATURE_HLE ( 9*32+ 4) /* Hardware Lock Elision */ #define X86_FEATURE_AVX2 ( 9*32+ 5) /* AVX2 instructions */ +#define X86_FEATURE_FDP_EXCPTN_ONLY ( 9*32+ 6) /* "" FPU data pointer updated only on x87 exceptions */ #define X86_FEATURE_SMEP ( 9*32+ 7) /* Supervisor Mode Execution Protection */ #define X86_FEATURE_BMI2 ( 9*32+ 8) /* 2nd group bit manipulation extensions */ #define X86_FEATURE_ERMS ( 9*32+ 9) /* Enhanced REP MOVSB/STOSB instructions */ #define X86_FEATURE_INVPCID ( 9*32+10) /* Invalidate Processor Context ID */ #define X86_FEATURE_RTM ( 9*32+11) /* Restricted Transactional Memory */ #define X86_FEATURE_CQM ( 9*32+12) /* Cache QoS Monitoring */ +#define X86_FEATURE_ZERO_FCS_FDS ( 9*32+13) /* "" Zero out FPU CS and FPU DS */ #define X86_FEATURE_MPX ( 9*32+14) /* Memory Protection Extension */ #define X86_FEATURE_RDT_A ( 9*32+15) /* Resource Director Technology Allocation */ #define X86_FEATURE_AVX512F ( 9*32+16) /* AVX-512 Foundation */ -- 2.20.1