[Xen-changelog] [xen master] x86/pvh: disable posted interrupts

[patchbot@xxxxxxx]

commit cf6b3ccf28faee01a078311fcfe671148c81ea75
Author:     Roger Pau Monné <roger.pau@xxxxxxxxxx>
AuthorDate: Thu May 28 10:56:08 2015 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu May 28 10:56:08 2015 +0200

    x86/pvh: disable posted interrupts

    Enabling posted interrupts requires the virtual interrupt delivery feature,
    which is disabled for PVH guests, so make sure posted interrupts are also
    disabled or else vmlaunch will fail.

    Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Reported-and-Tested-by: Lars Eggert <lars@xxxxxxxxxx>
    Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>
---
 xen/arch/x86/hvm/vmx/vmcs.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/xen/arch/x86/hvm/vmx/vmcs.c b/xen/arch/x86/hvm/vmx/vmcs.c
index 877ec10..3aff365 100644
--- a/xen/arch/x86/hvm/vmx/vmcs.c
+++ b/xen/arch/x86/hvm/vmx/vmcs.c
@@ -976,6 +976,10 @@ static int construct_vmcs(struct vcpu *v)
               | SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
         v->arch.hvm_vmx.exec_control &= ~CPU_BASED_TPR_SHADOW;

+        /* In turn, disable posted interrupts. */
+        __vmwrite(PIN_BASED_VM_EXEC_CONTROL,
+                  vmx_pin_based_exec_control & ~PIN_BASED_POSTED_INTERRUPT);
+
         /* Unrestricted guest (real mode for EPT) */
         v->arch.hvm_vmx.secondary_exec_control &=
             ~SECONDARY_EXEC_UNRESTRICTED_GUEST;
--
generated by git-patchbot for /home/xen/git/xen.git#master

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