diff options
| author | Lu Baolu <[email protected]> | 2021-01-15 08:42:02 +0800 |
|---|---|---|
| committer | Joerg Roedel <[email protected]> | 2021-01-28 11:33:35 +0100 |
| commit | a8ce9ebbecdfda3322bbcece6b3b25888217f8e3 (patch) | |
| tree | a869157ecd488fee69c6abd4a07087d0b7f8367e /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | f2dd871799ba5d80f95f9bdbc0e60d390e1bcd22 (diff) | |
iommu/vt-d: Preset Access/Dirty bits for IOVA over FL
The Access/Dirty bits in the first level page table entry will be set
whenever a page table entry was used for address translation or write
permission was successfully translated. This is always true when using
the first-level page table for kernel IOVA. Instead of wasting hardware
cycles to update the certain bits, it's better to set them up at the
beginning.
Suggested-by: Ashok Raj <[email protected]>
Signed-off-by: Lu Baolu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joerg Roedel <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions