[PATCH v2 0/3] KVM: VMX: Posted Interrupts fixes

From: Joao Martins <joao.m.martins@oracle.com>
To: kvm@vger.kernel.org
Cc: "Joao Martins" <joao.m.martins@oracle.com>,
	linux-kernel@vger.kernel.org,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Sean Christopherson" <sean.j.christopherson@intel.com>,
	"Vitaly Kuznetsov" <vkuznets@redhat.com>,
	"Wanpeng Li" <wanpengli@tencent.com>,
	"Jim Mattson" <jmattson@google.com>,
	"Joerg Roedel" <joro@8bytes.org>,
	"Liran Alon" <liran.alon@oracle.com>,
	"Jag Raman" <jag.raman@oracle.com>
Subject: [PATCH v2 0/3] KVM: VMX: Posted Interrupts fixes
Date: Mon, 11 Nov 2019 17:20:09 +0000	[thread overview]
Message-ID: <20191111172012.28356-1-joao.m.martins@oracle.com> (raw)

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

v2:
* Fixed missing Tb/Rb tags;
* Fixed broken Sob chains (on first two patches)
* Only test PID.PIR if PID.SN=1 (third patch)

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 | 21 +++++++++++++++++++--
 arch/x86/kvm/vmx/vmx.h | 11 +++++++++++
 2 files changed, 30 insertions(+), 2 deletions(-)

-- 
2.11.0