Hyper-V may expose a HV_X64_MSR_GUEST_IDLE MSR. We can read
HYPERV_CPUID_FEATURES eax to check it. Read this MSR can
trigger the guest's transition to the idle power state which
can be exited by an IPI even if IF flag is disabled.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Hyper-V may expose a HV_X64_MSR_GUEST_IDLE MSR. We can read
HYPERV_CPUID_FEATURES eax to check it. Read this MSR can
trigger the guest's transition to the idle power state which
can be exited by an IPI even if IF flag is disabled.
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
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