From: Paolo Bonzini <pbonzini@redhat.com>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org, rkrcmar@redhat.com
Subject: Re: [PATCH] KVM: x86: mask CPUID(0xD,0x1).EAX against host value
Date: Thu, 26 May 2016 18:51:03 +0200 [thread overview]
Message-ID: <95bc9f30-ddf4-267c-9b74-c644c1101cac@redhat.com> (raw)
In-Reply-To: <20160526163626.GB13099@kroah.com>
On 26/05/2016 18:36, Greg KH wrote:
> On Thu, May 26, 2016 at 01:44:06PM +0200, Paolo Bonzini wrote:
>> commit 316314cae15fb0e3869b76b468f59a0c83ac3d4e upstream.
>>
>> This ensures that the guest doesn't see XSAVE extensions
>> (e.g. xgetbv1 or xsavec) that the host lacks.
>>
>> Cc: stable@vger.kernel.org
>> Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
>> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>>
>> Conflicts:
>> arch/x86/kvm/cpuid.c
>
> Why is this here?
It's why the patch couldn't be lifted straight from Linus's tree. "git
cherry-pick" places it here. Granted, this time it doesn't add much
information since the patch touched one file only.
>>
>> [4.5 does have CPUID_D_1_EAX, but earlier kernels don't, so use
>> the numeric value. This is consistent with other occurrences
>> of cpuid_mask in arch/x86/kvm/cpuid.c - Paolo]
>
> What stable tree(s) do you want this applied to?
All where it applies.
Paolo
next prev parent reply other threads:[~2016-05-26 16:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-26 11:44 [PATCH] KVM: x86: mask CPUID(0xD,0x1).EAX against host value Paolo Bonzini
2016-05-26 16:36 ` Greg KH
2016-05-26 16:51 ` Paolo Bonzini [this message]
-- strict thread matches above, loose matches on Subject: below --
2016-04-07 11:47 Paolo Bonzini
2016-04-07 14:40 ` Radim Krčmář
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