From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tom Lendacky Subject: [PATCH v9 32/38] xen/x86: Remove SME feature in PV guests Date: Fri, 07 Jul 2017 08:44:08 -0500 Message-ID: <20170707134408.29711.78180.stgit@tlendack-t1.amdoffice.net> References: <20170707133804.29711.1616.stgit@tlendack-t1.amdoffice.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20170707133804.29711.1616.stgit@tlendack-t1.amdoffice.net> Sender: owner-linux-mm@kvack.org 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 List-Id: linux-efi@vger.kernel.org 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 a136aac..57da6b2 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); /* * Xen PV would need some work to support PCID: CR3 handling as well -- 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