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| author | Liran Alon <liran.alon@oracle.com> | 2017-11-15 13:43:14 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-12-14 09:26:44 +0100 |
| commit | 52797bf9a875c4a30f846196386684e646e08a91 (patch) | |
| tree | 2343f9d68c7efc9519c7be36e8669d475b100c4f /virt/kvm/kvm_main.c | |
| parent | 431f5d4443964bcc58ac2e4c6fd8ace6dcd3a8d1 (diff) | |
| download | linux-52797bf9a875c4a30f846196386684e646e08a91.tar.bz2 | |
KVM: x86: Add emulation of MSR_SMI_COUNT
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>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'virt/kvm/kvm_main.c')
0 files changed, 0 insertions, 0 deletions