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Wanpeng Li authored
Guest should only trust data to be valid when version haven't changed before and after reads of steal time. Besides not changing, it has to be an even number. Hypervisor may write an odd number to version field to indicate that an update is in progress. kvm_steal_clock() in guest has already done the read side, make write side in hypervisor more robust by following the above rule. Reviewed-by:
Wincy Van <fanwenyi0529@gmail.com> Signed-off-by:
Wanpeng Li <wanpeng.li@hotmail.com> Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com>
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