[Xen-changelog] [xen stable-4.5] x86/pvh: disable posted interrupts

[patchbot@xxxxxxx]

commit fbd26f2e9ef2e1393c4e69bc9df1171409803c6e
Author:     Roger Pau Monné <roger.pau@xxxxxxxxxx>
AuthorDate: Thu Jun 18 08:47:40 2015 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Jun 18 08:47:40 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>
    master commit: cf6b3ccf28faee01a078311fcfe671148c81ea75
    master date: 2015-05-28 10:56:08 +0200
---
 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 9d8033e..39b9479 100644
--- a/xen/arch/x86/hvm/vmx/vmcs.c
+++ b/xen/arch/x86/hvm/vmx/vmcs.c
@@ -930,6 +930,10 @@ 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#stable-4.5

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