util/vfio-helpers: Pass Error handle to qemu_vfio_dma_map()

Currently qemu_vfio_dma_map() displays errors on stderr.
When using management interface, this information is simply
lost. Pass qemu_vfio_dma_map() an Error** handle so it can
propagate the error to callers.

Reviewed-by: Fam Zheng <fam@euphon.net>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20210902070025.197072-7-philmd@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index e790922..77cdec8 100644
--- a/util/vfio-helpers.c
+++ b/util/vfio-helpers.c
@@ -463,13 +463,15 @@ static void qemu_vfio_ram_block_added(RAMBlockNotifier *n, void *host,
                                       size_t size, size_t max_size)
 {
     QEMUVFIOState *s = container_of(n, QEMUVFIOState, ram_notifier);
+    Error *local_err = NULL;
     int ret;
 
     trace_qemu_vfio_ram_block_added(s, host, max_size);
-    ret = qemu_vfio_dma_map(s, host, max_size, false, NULL);
+    ret = qemu_vfio_dma_map(s, host, max_size, false, NULL, &local_err);
     if (ret) {
-        error_report("qemu_vfio_dma_map(%p, %zu) failed: %s", host, max_size,
-                     strerror(-ret));
+        error_reportf_err(local_err,
+                          "qemu_vfio_dma_map(%p, %zu) failed: ",
+                          host, max_size);
     }
 }
 
@@ -725,7 +727,7 @@ qemu_vfio_find_temp_iova(QEMUVFIOState *s, size_t size, uint64_t *iova)
  * mapping status within this area is not allowed).
  */
 int qemu_vfio_dma_map(QEMUVFIOState *s, void *host, size_t size,
-                      bool temporary, uint64_t *iova)
+                      bool temporary, uint64_t *iova, Error **errp)
 {
     int ret = 0;
     int index;