Acked-by: "Michael S. Tsirkin" <[email protected]>
Signed-off-by: Marcelo Tosatti <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>
---
kvm-all.c | 3 ++-
qemu-barrier.h | 7 +++++++
2 files changed, 9 insertions(+), 1 deletions(-)
create mode 100644 qemu-barrier.h
diff --git a/kvm-all.c b/kvm-all.c
index 91d3cbd..1a02076 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -21,6 +21,7 @@
#include <linux/kvm.h>
#include "qemu-common.h"
+#include "qemu-barrier.h"
#include "sysemu.h"
#include "hw/hw.h"
#include "gdbstub.h"
@@ -730,7 +731,7 @@ void kvm_flush_coalesced_mmio_buffer(void)
ent = &ring->coalesced_mmio[ring->first];
cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len);
- /* FIXME smp_wmb() */
+ smp_wmb();
ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
}
}
diff --git a/qemu-barrier.h b/qemu-barrier.h
new file mode 100644
index 0000000..3bd1075
--- /dev/null
+++ b/qemu-barrier.h
@@ -0,0 +1,7 @@
+#ifndef __QEMU_BARRIER_H
+#define __QEMU_BARRIER_H 1
+
+/* FIXME: arch dependant, x86 version */
+#define smp_wmb() asm volatile("" ::: "memory")
+
+#endif
--
1.6.6
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