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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2021-01-15 08:42:02 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-01-28 11:33:35 +0100 |
| commit | a8ce9ebbecdfda3322bbcece6b3b25888217f8e3 (patch) | |
| tree | a869157ecd488fee69c6abd4a07087d0b7f8367e /tools/perf/scripts/python/export-to-postgresql.py | |
| 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 <ashok.raj@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210115004202.953965-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions