Hi Eric,
On 2020/11/16 19:00, Eric Auger wrote:
Add a new specific DMA_FAULT region aiming to exposed nested mode
translation faults. This region only is exposed if the device
is attached to a nested domain.
The region has a ring buffer that contains the actual fault
records plus a header allowing to handle it (tail/head indices,
max capacity, entry size). At the moment the region is dimensionned
for 512 fault records.
Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
[...]
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index b352e76cfb71..629dfb38d9e7 100644
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -343,6 +343,9 @@ struct vfio_region_info_cap_type {
/* sub-types for VFIO_REGION_TYPE_GFX */
#define VFIO_REGION_SUBTYPE_GFX_EDID (1)
+#define VFIO_REGION_TYPE_NESTED (2)
+#define VFIO_REGION_SUBTYPE_NESTED_DMA_FAULT (1)
+
The macro *define VFIO_REGION_TYPE_NESTED (2)* is in conflict with
*#define VFIO_REGION_TYPE_CCW (2)*.
Thanks,
Kunkun Jiang.
