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 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