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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 0DD85C7618F for ; Mon, 15 Jul 2019 14:09:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DB44521841 for ; Mon, 15 Jul 2019 14:09:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563199745; bh=Y5Pmj2+oQEZubUh/yvHuQJ7rgntZxSpUFUtEXXVTMUc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=JGJ9o3NO8TWnB/xXhPNWB/G0e6x145R+FbglQ8iILeZ379aC50e3QXexQMU3SUQvX TeBzZMlq8WdanNwjVGMoRC3bYzThVTFuuCJuCn45oxHv4Ry9juYQtHV6upDDwV7YEK HjGKfk0OKiMVUgMSnm6I9mB/0jSlE+vneh0xuPhQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388636AbfGOOJE (ORCPT ); Mon, 15 Jul 2019 10:09:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:60214 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388023AbfGOOJC (ORCPT ); Mon, 15 Jul 2019 10:09:02 -0400 Received: from sasha-vm.mshome.net (unknown [73.61.17.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 50841206B8; Mon, 15 Jul 2019 14:08:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563199742; bh=Y5Pmj2+oQEZubUh/yvHuQJ7rgntZxSpUFUtEXXVTMUc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=n+GyIBbT2Dp1abWcQfaW8Z3LyzjN2NopTyjpBKBLke9JNFiToICa2gB/guZJucUfC xB0u/KVvZMVX0jZ6Oaoou6aV/9LgbwFc+VwZNyTDt7/1EqOD93qLHSG435c9plfyWE iOqbRTkCPoOFsAcMm6TgvFq7HEhuDULDdqsI3ujc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: 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 AUTOSEL 5.1 090/219] x86/cpufeatures: Add FDP_EXCPTN_ONLY and ZERO_FCS_FDS Date: Mon, 15 Jul 2019 10:01:31 -0400 Message-Id: <20190715140341.6443-90-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190715140341.6443-1-sashal@kernel.org> References: <20190715140341.6443-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Aaron Lewis [ 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