There were often cases where a scanout blob sometimes has just 1 entry
that is linked to many pages in it. So just checking whether iov_cnt is 1
is not enough for screening small, non-scanout blobs. Therefore adding
iov_len check as well to make sure it creates an udmabuf only for a scanout
blob, which is at least bigger than one page size.
Cc: Gerd Hoffmann <kra...@redhat.com>
Cc: Marc-André Lureau <marcandre.lur...@redhat.com>
Cc: Vivek Kasireddy <vivek.kasire...@intel.com>
Signed-off-by: Dongwon Kim <dongwon....@intel.com>
---
hw/display/virtio-gpu-udmabuf.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/display/virtio-gpu-udmabuf.c b/hw/display/virtio-gpu-udmabuf.c
index 69e2cf0bd6..ef1a740de5 100644
--- a/hw/display/virtio-gpu-udmabuf.c
+++ b/hw/display/virtio-gpu-udmabuf.c
@@ -132,7 +132,8 @@ void virtio_gpu_init_udmabuf(struct
virtio_gpu_simple_resource *res)
void *pdata = NULL;
res->dmabuf_fd = -1;
- if (res->iov_cnt == 1) {
+ if (res->iov_cnt == 1 &&
+ res->iov[0].iov_len < 4096) {
pdata = res->iov[0].iov_base;
} else {
virtio_gpu_create_udmabuf(res);
--
2.34.1
