virt inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I401IF
CVE: NA

------------------------------

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: NEric Auger <eric.auger@redhat.com>
Signed-off-by: Kunkun Jiang<jiangkunkun@huawei.com>
Reviewed-by: NKeqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>