From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f200.google.com (mail-pf0-f200.google.com [209.85.192.200]) by kanga.kvack.org (Postfix) with ESMTP id 59D6883296 for ; Tue, 27 Jun 2017 11:13:35 -0400 (EDT) Received: by mail-pf0-f200.google.com with SMTP id c12so28448145pfj.12 for ; Tue, 27 Jun 2017 08:13:35 -0700 (PDT) Received: from NAM03-DM3-obe.outbound.protection.outlook.com (mail-dm3nam03on0043.outbound.protection.outlook.com. [104.47.41.43]) by mx.google.com with ESMTPS id k7si2259021pln.411.2017.06.27.08.13.34 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 27 Jun 2017 08:13:34 -0700 (PDT) From: Tom Lendacky Subject: [PATCH v8 RESEND 32/38] xen/x86: Remove SME feature in PV guests Date: Tue, 27 Jun 2017 10:13:27 -0500 Message-ID: <20170627151327.17428.11746.stgit@tlendack-t1.amdoffice.net> In-Reply-To: <20170627150718.17428.81813.stgit@tlendack-t1.amdoffice.net> References: <20170627150718.17428.81813.stgit@tlendack-t1.amdoffice.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: linux-arch@vger.kernel.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, xen-devel@lists.xen.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org Cc: Brijesh Singh , Toshimitsu Kani , Radim =?utf-8?b?S3LEjW3DocWZ?= , Matt Fleming , Alexander Potapenko , "H. Peter Anvin" , Larry Woodman , Jonathan Corbet , Joerg Roedel , "Michael S. Tsirkin" , Ingo Molnar , Andrey Ryabinin , Dave Young , Rik van Riel , Arnd Bergmann , Konrad Rzeszutek Wilk , Borislav Petkov , Andy Lutomirski , Boris Ostrovsky , Dmitry Vyukov , Juergen Gross , Thomas Gleixner , Paolo Bonzini Xen does not currently support SME for PV guests. Clear the SME CPU capability in order to avoid any ambiguity. Reviewed-by: Borislav Petkov Reviewed-by: Juergen Gross Signed-off-by: Tom Lendacky --- 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 f33eef4..e6ecf42 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -294,6 +294,7 @@ 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); if (!xen_initial_domain()) setup_clear_cpu_cap(X86_FEATURE_ACPI); -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org