[PATCH v1 0/3] KVM: VMX: Posted Interrupts fixes

Joao Martins
2019-11-06T17:57:52Z

Hey,

This mini-series addresses two bugs plus a small cleanup:

1) Considering PID.PIR as opposed to just PID.ON for pending interrupt checks
in the direct yield code path;

2) Not changing NDST in vmx_vcpu_pi_load(), which addresses a regression.
Prior to this, we would observe Win2K12 guests hanging momentarily.

3) Small cleanup to streamline PIR checks with a common helper.

The cleanup is done last to simplify backports.

Joao

Joao Martins (3):
KVM: VMX: Consider PID.PIR to determine if vCPU has pending interrupts
KVM: VMX: Do not change PID.NDST when loading a blocked vCPU
KVM: VMX: Introduce pi_is_pir_empty() helper

arch/x86/kvm/vmx/vmx.c | 20 ++++++++++++++++++--
arch/x86/kvm/vmx/vmx.h | 11 +++++++++++
2 files changed, 29 insertions(+), 2 deletions(-)

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2.11.0