From 29debf629b50536343eaa9d6c0779f63721f6f59 Mon Sep 17 00:00:00 2001
From: Roger Pau Monne <roger.pau@citrix.com>
Date: Thu, 21 May 2015 14:12:46 +0200
Subject: [PATCH] x86/pvh: disable posted interrupts
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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@citrix.com>
Reported-and-Tested-by: Lars Eggert <lars@netapp.com>
Cc: Jun Nakajima <jun.nakajima@intel.com>
Cc: Eddie Dong <eddie.dong@intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
---
 xen/arch/x86/hvm/vmx/vmcs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/arch/x86/hvm/vmx/vmcs.c b/xen/arch/x86/hvm/vmx/vmcs.c
index a714549..9827a8e 100644
--- a/xen/arch/x86/hvm/vmx/vmcs.c
+++ b/xen/arch/x86/hvm/vmx/vmcs.c
@@ -980,6 +980,10 @@ static int construct_vmcs(struct vcpu *v)
         v->arch.hvm_vmx.secondary_exec_control &=
             ~SECONDARY_EXEC_UNRESTRICTED_GUEST;
 
+        /* Disable posted interrupts */
+        __vmwrite(PIN_BASED_VM_EXEC_CONTROL,
+            vmx_pin_based_exec_control & ~PIN_BASED_POSTED_INTERRUPT);
+
         /* Start in 64-bit mode. PVH 32bitfixme. */
         vmentry_ctl |= VM_ENTRY_IA32E_MODE;       /* GUEST_EFER.LME/LMA ignored */
 
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