diff options
| author | Tycho Andersen <[email protected]> | 2017-05-04 16:15:51 -0600 |
|---|---|---|
| committer | Tejun Heo <[email protected]> | 2017-05-16 11:23:16 -0400 |
| commit | 5d7a288caf6d9b839a9a5bd28e56e15678669e67 (patch) | |
| tree | e1546dd0e4b6e9f3efd85c781a16729815452be2 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py | |
| parent | a95cfad947d5f40cfbf9ad3019575aac1d8ac7a6 (diff) | |
ata-sff: always map page before data transfer
The XPFO [1] patchset may unmap pages from physmap if they happened to be
destined for userspace. If such a page is unmapped, it needs to be
remapped. Rather than test if a page is in the highmem/xpfo unmapped state,
Christoph suggested [2] that we simply always map the page.
v2: * drop comment about bounce buffer
* don't save IRQs before kmap/unmap
* formatting
[1]: https://lkml.org/lkml/2016/11/4/245
[2]: https://lkml.org/lkml/2016/11/4/253
Suggested-and-reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Tycho Andersen <[email protected]>
CC: Juerg Haefliger <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py')
0 files changed, 0 insertions, 0 deletions