From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751803AbdGRLHo (ORCPT ); Tue, 18 Jul 2017 07:07:44 -0400 Received: from terminus.zytor.com ([65.50.211.136]:52315 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751451AbdGRLHm (ORCPT ); Tue, 18 Jul 2017 07:07:42 -0400 Date: Tue, 18 Jul 2017 03:58:59 -0700 From: tip-bot for Tom Lendacky Message-ID: Cc: toshi.kani@hpe.com, riel@redhat.com, bp@suse.de, glider@google.com, rkrcmar@redhat.com, matt@codeblueprint.co.uk, mingo@kernel.org, hpa@zytor.com, konrad.wilk@oracle.com, xen-devel@lists.xen.org, brijesh.singh@amd.com, boris.ostrovsky@oracle.com, mst@redhat.com, tglx@linutronix.de, bp@alien8.de, torvalds@linux-foundation.org, jgross@suse.com, peterz@infradead.org, pbonzini@redhat.com, dyoung@redhat.com, arnd@arndb.de, corbet@lwn.net, linux-kernel@vger.kernel.org, dvyukov@google.com, aryabinin@virtuozzo.com, lwoodman@redhat.com, thomas.lendacky@amd.com, luto@kernel.org Reply-To: lwoodman@redhat.com, thomas.lendacky@amd.com, luto@kernel.org, aryabinin@virtuozzo.com, dvyukov@google.com, linux-kernel@vger.kernel.org, corbet@lwn.net, dyoung@redhat.com, arnd@arndb.de, peterz@infradead.org, pbonzini@redhat.com, jgross@suse.com, tglx@linutronix.de, torvalds@linux-foundation.org, bp@alien8.de, mst@redhat.com, boris.ostrovsky@oracle.com, xen-devel@lists.xen.org, konrad.wilk@oracle.com, brijesh.singh@amd.com, hpa@zytor.com, mingo@kernel.org, glider@google.com, rkrcmar@redhat.com, matt@codeblueprint.co.uk, riel@redhat.com, toshi.kani@hpe.com, bp@suse.de In-Reply-To: <3b605622a9fae5e588e5a13967120a18ec18071b.1500319216.git.thomas.lendacky@amd.com> References: <3b605622a9fae5e588e5a13967120a18ec18071b.1500319216.git.thomas.lendacky@amd.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/mm] xen/x86: Remove SME feature in PV guests Git-Commit-ID: f2f931c6819467af5260a21c59fb787ce2863f92 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: f2f931c6819467af5260a21c59fb787ce2863f92 Gitweb: http://git.kernel.org/tip/f2f931c6819467af5260a21c59fb787ce2863f92 Author: Tom Lendacky AuthorDate: Mon, 17 Jul 2017 16:10:29 -0500 Committer: Ingo Molnar CommitDate: Tue, 18 Jul 2017 11:38:05 +0200 xen/x86: Remove SME feature in PV guests Xen does not currently support SME for PV guests. Clear the SME CPU capability in order to avoid any ambiguity. Signed-off-by: Tom Lendacky Reviewed-by: Thomas Gleixner Reviewed-by: Borislav Petkov Reviewed-by: Juergen Gross Cc: Cc: Alexander Potapenko Cc: Andrey Ryabinin Cc: Andy Lutomirski Cc: Arnd Bergmann Cc: Boris Ostrovsky Cc: Borislav Petkov Cc: Brijesh Singh Cc: Dave Young Cc: Dmitry Vyukov Cc: Jonathan Corbet Cc: Konrad Rzeszutek Wilk Cc: Larry Woodman Cc: Linus Torvalds Cc: Matt Fleming Cc: Michael S. Tsirkin Cc: Paolo Bonzini Cc: Peter Zijlstra Cc: Radim Krčmář Cc: Rik van Riel Cc: Toshimitsu Kani Cc: kasan-dev@googlegroups.com Cc: kvm@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-doc@vger.kernel.org Cc: linux-efi@vger.kernel.org Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/3b605622a9fae5e588e5a13967120a18ec18071b.1500319216.git.thomas.lendacky@amd.com Signed-off-by: Ingo Molnar --- arch/x86/xen/enlighten_pv.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index 290bc5a..df19217 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -263,6 +263,7 @@ static void __init xen_init_capabilities(void) setup_clear_cpu_cap(X86_FEATURE_MTRR); setup_clear_cpu_cap(X86_FEATURE_ACC); setup_clear_cpu_cap(X86_FEATURE_X2APIC); + setup_clear_cpu_cap(X86_FEATURE_SME); /* * Xen PV would need some work to support PCID: CR3 handling as well