diff options
| author | Dan Williams <[email protected]> | 2017-11-29 16:10:18 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2017-11-29 18:40:42 -0800 |
| commit | c7da82b894e9eef60a04a15f065a8502341bf13b (patch) | |
| tree | c59fd3cca98b6247bcd36f2cea370c3ce746b4e2 /tools/perf/scripts/python/call-graph-from-sql.py | |
| parent | e7fe7b5cae90cf85bb6fed5ec5d4c5cf311a4fe9 (diff) | |
mm: replace pmd_write with pmd_access_permitted in fault + gup paths
The 'access_permitted' helper is used in the gup-fast path and goes
beyond the simple _PAGE_RW check to also:
- validate that the mapping is writable from a protection keys
standpoint
- validate that the pte has _PAGE_USER set since all fault paths where
pmd_write is must be referencing user-memory.
Link: http://lkml.kernel.org/r/151043111049.2842.15241454964150083466.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Kirill A. Shutemov <[email protected]>
Cc: "Jérôme Glisse" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-sql.py')
0 files changed, 0 insertions, 0 deletions