From patchwork Wed Feb  3 21:29:43 2010
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: [2/4] KVM: Make vmport KVM-compatible
Date: Wed, 03 Feb 2010 11:29:43 -0000
From: Jan Kiszka <jan.kiszka@siemens.com>
X-Patchwork-Id: 44426
Message-Id: <bc60542c9d9811531aa58d694a3bb98935558d04.1265232579.git.jan.kiszka@siemens.com>
To: Anthony Liguori <aliguori@us.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>, qemu-devel@nongnu.org,
 kvm@vger.kernel.org, Avi Kivity <avi@redhat.com>

The vmport "device" accesses the VCPU registers, so it requires proper
cpu_synchronize_state. Add it to vmport_ioport_read, which also
synchronizes vmport_ioport_write.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

---
hw/vmport.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/hw/vmport.c b/hw/vmport.c
index 884af3f..6c9d7c9 100644
--- a/hw/vmport.c
+++ b/hw/vmport.c
@@ -25,6 +25,7 @@
 #include "isa.h"
 #include "pc.h"
 #include "sysemu.h"
+#include "kvm.h"
 
 //#define VMPORT_DEBUG
 
@@ -58,6 +59,8 @@ static uint32_t vmport_ioport_read(void *opaque, uint32_t addr)
     unsigned char command;
     uint32_t eax;
 
+    cpu_synchronize_state(env);
+
     eax = env->regs[R_EAX];
     if (eax != VMPORT_MAGIC)
         return eax;