Re: [kvm-unit-tests PATCH 2/2] x86: nVMX: Set guest as active after NMI/INTR-window tests

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From: Nadav Amit <nadav.amit@xxxxxxxxx>
Date: Wed, May 8, 2019 at 10:47 AM
To: Paolo Bonzini
Cc: <kvm@xxxxxxxxxxxxxxx>, Nadav Amit, Jim Mattson, Sean Christopherson

> From: Nadav Amit <nadav.amit@xxxxxxxxx>
>
> Intel SDM 26.6.5 says regarding interrupt-window exiting that: "These
> events wake the logical processor if it just entered the HLT state
> because of a VM entry." A similar statement is told about NMI-window
> exiting.
>
> However, running tests which are similar to verify_nmi_window_exit() and
> verify_intr_window_exit() on bare-metal suggests that real CPUs do not
> wake up. Until someone figures what the correct behavior is, just reset
> the activity state to "active" after each test to prevent the whole
> test-suite from getting stuck.
>
> Cc: Jim Mattson <jmattson@xxxxxxxxxx>
> Cc: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
> Signed-off-by: Nadav Amit <nadav.amit@xxxxxxxxx>
Reviewed-by: Jim Mattson <jmattson@xxxxxxxxxx>

I think I have been assuming that "wake the logical processor" means
"causes the logical processor to enter the 'active' activity state."
Maybe that's not what "wake" means?



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