From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wanpeng Li Subject: Re: [CFT PATCH 0/2] KVM: support XSAVES usage in the host Date: Sun, 23 Nov 2014 16:24:19 +0800 Message-ID: <547199B3.1040303@gmail.com> References: <1416594678-13011-1-git-send-email-pbonzini@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Linux Kernel Mailing List , kvm@vger.kernel.org, Nadav Amit , Wanpeng Li To: Nadav Amit , Paolo Bonzini Return-path: Received: from mail-pa0-f41.google.com ([209.85.220.41]:53362 "EHLO mail-pa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751126AbaKWIYg (ORCPT ); Sun, 23 Nov 2014 03:24:36 -0500 In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: Hi Nadav, On 11/23/14, 4:16 PM, Nadav Amit wrote: > I=E2=80=99ll try to check it tomorrow (I don=E2=80=99t have access to= the failing machine at the moment). If the machine you mentioned support xsaves and what's machine you are=20 using? Regards, Wanpeng Li > > Thanks for the quick response. > > Nadav > >> On Nov 21, 2014, at 20:31, Paolo Bonzini wrote= : >> >> The first patch ensures that XSAVES is not exposed in the guest unti= l >> we emulate MSR_IA32_XSS. The second exports XSAVE data in the corre= ct >> format. >> >> I tested these on a non-XSAVES system so they should not be complete= ly >> broken, but I need some help. I am not even sure which XSAVE states >> are _not_ enabled, and thus compacted, in Linux. >> >> Note that these patches do not add support for XSAVES in the guest y= et, >> since MSR_IA32_XSS is not emulated. >> >> If they fix the bug Nadav reported, I'll add Reported-by and commit. >> >> Thanks, >> >> Paolo >> >> Paolo Bonzini (2): >> kvm: x86: mask out XSAVES >> KVM: x86: support XSAVES usage in the host >> >> arch/x86/kvm/cpuid.c | 11 ++++++++++- >> arch/x86/kvm/x86.c | 48 ++++++++++++++++++++++++++++++++++++++++++= +----- >> 2 files changed, 53 insertions(+), 6 deletions(-) >> >> --=20 >> 1.8.3.1 >> >> -- >> To unsubscribe from this list: send the line "unsubscribe kvm" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > -- > To unsubscribe from this list: send the line "unsubscribe linux-kerne= l" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/