[RFC PATCH v1 3/4] Add vfio_listerner_log_sync to mark dirty pages

Kirti Wankhede
2018-10-16T18:12:37Z

vfio_listerner_log_sync gets list of dirty pages from vendor driver and mark
those pages dirty.

Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
Reviewed-by: Neo Jia <cjia@nvidia.com>
---
hw/vfio/common.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)

diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index fb396cf00ac4..817d93750337 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -697,9 +697,41 @@ static void vfio_listener_region_del(MemoryListener *listener,
}
}

+static void vfio_listerner_log_sync(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+ uint64_t start_addr, size, pfn_count;
+ VFIOGroup *group;
+ VFIODevice *vbasedev;
+
+ QLIST_FOREACH(group, &vfio_group_list, next) {
+ QLIST_FOREACH(vbasedev, &group->device_list, next) {
+ switch (vbasedev->device_state) {
+ case VFIO_DEVICE_STATE_MIGRATION_PRECOPY_ACTIVE:
+ case VFIO_DEVICE_STATE_MIGRATION_STOPNCOPY_ACTIVE:
+ continue;
+
+ default:
+ return;
+ }
+ }
+ }
+
+ start_addr = TARGET_PAGE_ALIGN(section->offset_within_address_space);
+ size = int128_get64(section->size);
+ pfn_count = size >> TARGET_PAGE_BITS;
+
+ QLIST_FOREACH(group, &vfio_group_list, next) {
+ QLIST_FOREACH(vbasedev, &group->device_list, next) {
+ vfio_get_dirty_page_list(vbasedev, start_addr, pfn_count);
+ }
+ }
+}
+
static const MemoryListener vfio_memory_listener = {
.region_add = vfio_listener_region_add,
.region_del = vfio_listener_region_del,
+ .log_sync = vfio_listerner_log_sync,
};

static void vfio_listener_release(VFIOContainer *container)
--
2.7.0