From mboxrd@z Thu Jan 1 00:00:00 1970 From: Borislav Petkov Subject: Re: [PATCH v7 32/36] xen/x86: Remove SME feature in PV guests Date: Fri, 23 Jun 2017 11:09:57 +0200 Message-ID: <20170623090957.yb2x225f4ok4w5qu@pd.tnic> References: <20170616184947.18967.84890.stgit@tlendack-t1.amdoffice.net> <20170616185554.18967.82909.stgit@tlendack-t1.amdoffice.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <20170616185554.18967.82909.stgit@tlendack-t1.amdoffice.net> Sender: owner-linux-mm@kvack.org To: Tom Lendacky Cc: 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, 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 List-Id: linux-arch.vger.kernel.org On Fri, Jun 16, 2017 at 01:55:54PM -0500, Tom Lendacky wrote: > Xen does not currently support SME for PV guests. Clear the SME cpu nitpick: s/cpu/CPU/ > capability in order to avoid any ambiguity. > > 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); Reviewed-by: Borislav Petkov -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply. -- 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.skyhub.de ([5.9.137.197]:38720 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753912AbdFWJKN (ORCPT ); Fri, 23 Jun 2017 05:10:13 -0400 Date: Fri, 23 Jun 2017 11:09:57 +0200 From: Borislav Petkov Subject: Re: [PATCH v7 32/36] xen/x86: Remove SME feature in PV guests Message-ID: <20170623090957.yb2x225f4ok4w5qu@pd.tnic> References: <20170616184947.18967.84890.stgit@tlendack-t1.amdoffice.net> <20170616185554.18967.82909.stgit@tlendack-t1.amdoffice.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20170616185554.18967.82909.stgit@tlendack-t1.amdoffice.net> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Tom Lendacky Cc: 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, 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 , Andy Lutomirski , Boris Ostrovsky , Dmitry Vyukov , Juergen Gross , Thomas Gleixner , Paolo Bonzini Message-ID: <20170623090957.sWDxc4mSqGXNt7OQP5sgE0edjZXt7fCazcazEJIaeWQ@z> On Fri, Jun 16, 2017 at 01:55:54PM -0500, Tom Lendacky wrote: > Xen does not currently support SME for PV guests. Clear the SME cpu nitpick: s/cpu/CPU/ > capability in order to avoid any ambiguity. > > 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); Reviewed-by: Borislav Petkov -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.