diff options
| author | Lu Baolu | 2020-07-24 09:49:23 +0800 |
|---|---|---|
| committer | Joerg Roedel | 2020-07-24 10:51:21 +0200 |
| commit | eb8d93ea3c1d35b0baf693dd0b7c87ec62358fc9 (patch) | |
| tree | 843709730712b90ce52349a5025c23b1a069f866 /fs/xfs/xfs_error.c | |
| parent | 19abcf70c2b16834a607db515b26a32b233c79eb (diff) | |
iommu/vt-d: Report page request faults for guest SVA
A pasid might be bound to a page table from a VM guest via the iommu
ops.sva_bind_gpasid. In this case, when a DMA page fault is detected
on the physical IOMMU, we need to inject the page fault request into
the guest. After the guest completes handling the page fault, a page
response need to be sent back via the iommu ops.page_response().
This adds support to report a page request fault. Any external module
which is interested in handling this fault should regiester a notifier
with iommu_register_device_fault_handler().
Co-developed-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Co-developed-by: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20200724014925.15523-11-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'fs/xfs/xfs_error.c')
0 files changed, 0 insertions, 0 deletions