On 2018/01/02 17:47, Liran Alon wrote:


On 02/01/18 00:58, Paolo Bonzini wrote:
The POSTED_INTR_NV field is constant (though it differs between the vmcs01 and
vmcs02), there is no need to reload it on vmexit to L1.

Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
  arch/x86/kvm/vmx.c | 3 ---
  1 file changed, 3 deletions(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index e6223fe8faa1..1e184830a295 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -11610,9 +11610,6 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
           */
          vmx_flush_tlb(vcpu, true);
      }
-    /* Restore posted intr vector. */
-    if (nested_cpu_has_posted_intr(vmcs12))
-        vmcs_write16(POSTED_INTR_NV, POSTED_INTR_VECTOR);

      vmcs_write32(GUEST_SYSENTER_CS, vmcs12->host_ia32_sysenter_cs);
      vmcs_writel(GUEST_SYSENTER_ESP, vmcs12->host_ia32_sysenter_esp);


Reviewed-by: Liran Alon <liran.a...@oracle.com>

I would also add to commit message:
Fixes: 06a5524f091b ("KVM: nVMX: Fix posted intr delivery when vcpu is in guest mode")

Reviewed-by: Quan Xu <quan....@gmail.com>

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