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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-03-16 15:37:33 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-03-17 04:02:49 -0400 |
| commit | d2547cf59793168b564372d75620897416cbaf87 (patch) | |
| tree | 1264c35869727553862346deffbefb48f3d35b8d /scripts/coccinelle | |
| parent | 08889894cc82bc3b213bdb192f274358e5a6b78d (diff) | |
| download | linux-d2547cf59793168b564372d75620897416cbaf87.tar.bz2 | |
KVM: x86: hyper-v: Limit guest to writing zero to HV_X64_MSR_TSC_EMULATION_STATUS
HV_X64_MSR_TSC_EMULATION_STATUS indicates whether TSC accesses are emulated
after migration (to accommodate for a different host TSC frequency when TSC
scaling is not supported; we don't implement this in KVM). Guest can use
the same MSR to stop TSC access emulation by writing zero. Writing anything
else is forbidden.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210316143736.964151-2-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'scripts/coccinelle')
0 files changed, 0 insertions, 0 deletions