vfio: Add Error** argument to .set_dirty_page_tracking() handler

We will use the Error object to improve error reporting in the
.log_global*() handlers of VFIO. Add documentation while at it.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index 77bdec276e..c35221fbe7 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -209,7 +209,7 @@ static int vfio_legacy_dma_map(const VFIOContainerBase *bcontainer, hwaddr iova,
 
 static int
 vfio_legacy_set_dirty_page_tracking(const VFIOContainerBase *bcontainer,
-                                    bool start)
+                                    bool start, Error **errp)
 {
     const VFIOContainer *container = container_of(bcontainer, VFIOContainer,
                                                   bcontainer);
@@ -227,8 +227,8 @@ vfio_legacy_set_dirty_page_tracking(const VFIOContainerBase *bcontainer,
     ret = ioctl(container->fd, VFIO_IOMMU_DIRTY_PAGES, &dirty);
     if (ret) {
         ret = -errno;
-        error_report("Failed to set dirty tracking flag 0x%x errno: %d",
-                     dirty.flags, errno);
+        error_setg_errno(errp, errno, "Failed to set dirty tracking flag 0x%x",
+                         dirty.flags);
     }
 
     return ret;