From: Mateusz Polrola <mateuszx.potr...@intel.com>
If shared pages of buffer were already mapped on importer side, do
not map them again on next request to export fd.
Signed-off-by: Mateusz Polrola <mateuszx.potr...@intel.com>
Signed-off-by: Dongwon Kim <dongwon....@intel.com>
---
drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c
b/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c
index 90e0c65..af94359 100644
--- a/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c
+++ b/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c
@@ -203,7 +203,7 @@ static int hyper_dmabuf_export_fd_ioctl(void *data)
if (!data) {
printk("user data is NULL\n");
- return -1;
+ return -EINVAL;
}
export_fd_attr = (struct ioctl_hyper_dmabuf_export_fd *)data;
@@ -218,15 +218,17 @@ static int hyper_dmabuf_export_fd_ioctl(void *data)
imported_sgt_info->last_len, imported_sgt_info->nents,
HYPER_DMABUF_ID_IMPORTER_GET_SDOMAIN_ID(imported_sgt_info->hyper_dmabuf_id));
- imported_sgt_info->sgt = hyper_dmabuf_map_pages(imported_sgt_info->gref,
- imported_sgt_info->frst_ofst,
- imported_sgt_info->last_len,
- imported_sgt_info->nents,
-
HYPER_DMABUF_ID_IMPORTER_GET_SDOMAIN_ID(imported_sgt_info->hyper_dmabuf_id),
-
&imported_sgt_info->shared_pages_info);
-
if (!imported_sgt_info->sgt) {
- return -1;
+ imported_sgt_info->sgt =
hyper_dmabuf_map_pages(imported_sgt_info->gref,
+
imported_sgt_info->frst_ofst,
+
imported_sgt_info->last_len,
+
imported_sgt_info->nents,
+
HYPER_DMABUF_ID_IMPORTER_GET_SDOMAIN_ID(imported_sgt_info->hyper_dmabuf_id),
+
&imported_sgt_info->shared_pages_info);
+ if (!imported_sgt_info->sgt) {
+ printk("Failed to create sgt\n");
+ return -EINVAL;
+ }
}
export_fd_attr->fd = hyper_dmabuf_export_fd(imported_sgt_info,
export_fd_attr->flags);
--
2.7.4
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
