hw/vfio: Add number of dirty pages to vfio_get_dirty_bitmap tracepoint

Include the number of dirty pages on the vfio_get_dirty_bitmap tracepoint.
These are fetched from the newly added return value in
cpu_physical_memory_set_dirty_lebitmap().

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Message-Id: <20230530180556.24441-3-joao.m.martins@oracle.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 78358ede27..fa8fd949b1 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -1747,6 +1747,7 @@ static int vfio_get_dirty_bitmap(VFIOContainer *container, uint64_t iova,
 {
     bool all_device_dirty_tracking =
         vfio_devices_all_device_dirty_tracking(container);
+    uint64_t dirty_pages;
     VFIOBitmap vbmap;
     int ret;
 
@@ -1772,11 +1773,11 @@ static int vfio_get_dirty_bitmap(VFIOContainer *container, uint64_t iova,
         goto out;
     }
 
-    cpu_physical_memory_set_dirty_lebitmap(vbmap.bitmap, ram_addr,
-                                           vbmap.pages);
+    dirty_pages = cpu_physical_memory_set_dirty_lebitmap(vbmap.bitmap, ram_addr,
+                                                         vbmap.pages);
 
     trace_vfio_get_dirty_bitmap(container->fd, iova, size, vbmap.size,
-                                ram_addr);
+                                ram_addr, dirty_pages);
 out:
     g_free(vbmap.bitmap);