vhost was passing a physical address to cpu_physical_memory_set_dirty,

which is wrong: we need to translate to ram address first.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Note: this lead to crashes during migration, so the patch

is needed on the stable branch too.

---

 hw/vhost.c |    4 +++-

 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/hw/vhost.c b/hw/vhost.c

index aaa34e4..97a1299 100644

--- a/hw/vhost.c

+++ b/hw/vhost.c

@@ -49,8 +49,10 @@ static void vhost_dev_sync_region(struct vhost_dev *dev,

         log = __sync_fetch_and_and(from, 0);

         while ((bit = sizeof(log) > sizeof(int) ?

                 ffsll(log) : ffs(log))) {

+            ram_addr_t ram_addr;

             bit -= 1;

-            cpu_physical_memory_set_dirty(addr + bit * VHOST_LOG_PAGE);

+            ram_addr = cpu_get_physical_page_desc(addr + bit * VHOST_LOG_PAGE);

+            cpu_physical_memory_set_dirty(ram_addr);

             log &= ~(0x1ull << bit);

         }

         addr += VHOST_LOG_CHUNK;

-- 

1.7.3.2.91.g446ac