linux-kernel - Re: [PATCH 1/2] KVM: x86: move MSR_IA32_FEATURE

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Message-ID: <be32a326-d137-66b0-3b9d-4ff7477ab470@redhat.com>
Date:	Fri, 8 Jul 2016 15:24:09 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	rkrcmar@...hat.com
Subject: Re: [PATCH 1/2] KVM: x86: move MSR_IA32_FEATURE_CONTROL handling to
 x86.c



On 08/07/2016 14:41, Haozhong Zhang wrote:
> On 07/08/16 14:01, Paolo Bonzini wrote:
>> > Because the MSR is listed in msrs_to_save, it is exported to userspace
>> > for both AMD and Intel processors.  However, on AMD currently getting
>> > it will fail.
>> >
> Is MSR_IA32_FEATURE_CONTROL already be excluded from msrs_to_save[] by
> kvm_init_msr_list() on AMD hosts?

Uhm... you're right, because the MSR doesn't exist on AMD hosts.

Facepalm...

Paolo