[Xen-changelog] [xen stable-4.4] x86/pvh: disable posted interrupts

[patchbot@xxxxxxx]

commit 7140a69485e867e9914b0fc5a2f3fa57110f8533
Author:     Roger Pau Monné <roger.pau@xxxxxxxxxx>
AuthorDate: Thu Jun 18 09:28:02 2015 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Jun 18 09:28:02 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 ee1f4d5..4a97563 100644
--- a/xen/arch/x86/hvm/vmx/vmcs.c
+++ b/xen/arch/x86/hvm/vmx/vmcs.c
@@ -909,6 +909,10 @@ 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-4.4

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