diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2018-12-10 09:58:56 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2018-12-11 10:45:57 +0100 |
| commit | 0bbeb01a4fafbf8422e5c8882d461d6ac4f71e15 (patch) | |
| tree | 13fb70fbca6f9377d23584c0a943172a97646e93 /fs/eventpoll.c | |
| parent | 765b6a98c1de3d84dfdae344cc4ee4c24d9447f7 (diff) | |
iommu/vt-d: Manage scalalble mode PASID tables
In scalable mode, pasid structure is a two level table with
a pasid directory table and a pasid table. Any pasid entry
can be identified by a pasid value in below way.
1
9 6 5 0
.-----------------------.-------.
| PASID | |
'-----------------------'-------' .-------------.
| | | |
| | | |
| | | |
| .-----------. | .-------------.
| | | |----->| PASID Entry |
| | | | '-------------'
| | | |Plus | |
| .-----------. | | |
|---->| DIR Entry |-------->| |
| '-----------' '-------------'
.---------. |Plus | |
| Context | | | |
| Entry |------->| |
'---------' '-----------'
This changes the pasid table APIs to support scalable mode
PASID directory and PASID table. It also adds a helper to
get the PASID table entry according to the pasid value.
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Sanjay Kumar <sanjay.k.kumar@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: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'fs/eventpoll.c')
0 files changed, 0 insertions, 0 deletions