From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755119AbbGUJi6 (ORCPT ); Tue, 21 Jul 2015 05:38:58 -0400 Received: from terminus.zytor.com ([198.137.202.10]:40379 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755079AbbGUJi4 (ORCPT ); Tue, 21 Jul 2015 05:38:56 -0400 Date: Tue, 21 Jul 2015 02:38:17 -0700 From: tip-bot for Jan Beulich Message-ID: Cc: torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, jbeulich@suse.com, hpa@zytor.com, JBeulich@suse.com, mingo@kernel.org, tglx@linutronix.de, dave.hansen@linux.intel.com, peterz@infradead.org Reply-To: mingo@kernel.org, tglx@linutronix.de, peterz@infradead.org, dave.hansen@linux.intel.com, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, jbeulich@suse.com, hpa@zytor.com, JBeulich@suse.com In-Reply-To: <55ACC40D0200007800092E6C@mail.emea.novell.com> References: <55ACC40D0200007800092E6C@mail.emea.novell.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/urgent] x86/fpu: Disable dependent CPU features on " noxsave" Git-Commit-ID: 5bc016f1abaa1c5ac0e3af23aa79faec4634a074 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 5bc016f1abaa1c5ac0e3af23aa79faec4634a074 Gitweb: http://git.kernel.org/tip/5bc016f1abaa1c5ac0e3af23aa79faec4634a074 Author: Jan Beulich AuthorDate: Mon, 20 Jul 2015 08:49:01 +0100 Committer: Ingo Molnar CommitDate: Tue, 21 Jul 2015 08:20:42 +0200 x86/fpu: Disable dependent CPU features on "noxsave" Complete the set of dependent features that need disabling at once: XSAVEC, AVX-512 and all currently known to the kernel extensions to it, as well as MPX need to be disabled too. Signed-off-by: Jan Beulich Cc: Dave Hansen Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/55ACC40D0200007800092E6C@mail.emea.novell.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/fpu/init.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c index 0b39173..1e173f6 100644 --- a/arch/x86/kernel/fpu/init.c +++ b/arch/x86/kernel/fpu/init.c @@ -351,9 +351,15 @@ static int __init x86_noxsave_setup(char *s) setup_clear_cpu_cap(X86_FEATURE_XSAVE); setup_clear_cpu_cap(X86_FEATURE_XSAVEOPT); + setup_clear_cpu_cap(X86_FEATURE_XSAVEC); setup_clear_cpu_cap(X86_FEATURE_XSAVES); setup_clear_cpu_cap(X86_FEATURE_AVX); setup_clear_cpu_cap(X86_FEATURE_AVX2); + setup_clear_cpu_cap(X86_FEATURE_AVX512F); + setup_clear_cpu_cap(X86_FEATURE_AVX512PF); + setup_clear_cpu_cap(X86_FEATURE_AVX512ER); + setup_clear_cpu_cap(X86_FEATURE_AVX512CD); + setup_clear_cpu_cap(X86_FEATURE_MPX); return 1; }