From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932509AbbGTIJm (ORCPT ); Mon, 20 Jul 2015 04:09:42 -0400 Received: from [89.191.203.168] ([89.191.203.168]:36271 "EHLO mail.emea.novell.com" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S932301AbbGTIJk convert rfc822-to-8bit (ORCPT ); Mon, 20 Jul 2015 04:09:40 -0400 Message-Id: <55ACC40D0200007800092E6C@mail.emea.novell.com> X-Mailer: Novell GroupWise Internet Agent 14.0.1 Date: Mon, 20 Jul 2015 08:49:01 +0100 From: "Jan Beulich" To: , , Cc: Subject: [PATCH] x86: "noxsave" should imply further disabled features Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- arch/x86/kernel/fpu/init.c | 6 ++++++ 1 file changed, 6 insertions(+) --- 4.2-rc3/arch/x86/kernel/fpu/init.c +++ 4.2-rc3-x86-noxsave-means-nompx/arch/x86/kernel/fpu/init.c @@ -351,9 +351,15 @@ static int __init x86_noxsave_setup(char 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; }