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From: Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>
Subject: Re: [PATCH] KVM: x86: Add emulation of MSR_SMI_COUNT
Date: Tue, 5 Dec 2017 22:09:18 +0100
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References: <1510746194-12291-1-git-send-email-liran.alon@oracle.com>
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Cc: pbonzini@redhat.com, kvm@vger.kernel.org, idan.brown@oracle.com,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Liran Alon <liran.alon@oracle.com>
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2017-11-15 13:43+0200, Liran Alon:
> This MSR returns the number of #SMIs that occurred on CPU since
> boot.
> 
> It was seen to be used frequently by ESXi guest.
> 
> Patch adds a new vcpu-arch specific var called smi_count to
> save the number of #SMIs which occurred on CPU since boot.
> It is exposed as a read-only MSR to guest (causing #GP
> on wrmsr) in RDMSR/WRMSR emulation code.
> MSR_SMI_COUNT is also added to emulated_msrs[] to make sure
> user-space can save/restore it for migration purposes.
> 
> Signed-off-by: Liran Alon <liran.alon@oracle.com>
> Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
> Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
> Reviewed-by: Bhavesh Davda <bhavesh.davda@oracle.com>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> ---

Queued, thanks.