diff options
| author | Benjamin Herrenschmidt <[email protected]> | 2018-03-23 09:29:06 +1100 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2018-03-23 14:16:58 +1100 |
| commit | 80a4ae202f2d319eced8bbf612a4e8b0f11c21f5 (patch) | |
| tree | efc1aff78cc26e978b06ab6fb11a919dabc2156b /tools/perf/scripts/python | |
| parent | aff6f8cb3e2170b9e58b0932bce7bfb492775e23 (diff) | |
powerpc/mm: Workaround Nest MMU bug with TLB invalidations
On POWER9 the Nest MMU may fail to invalidate some translations when
doing a tlbie "by PID" or "by LPID" that is targeted at the TLB only
and not the page walk cache.
This works around it by forcing such invalidations to escalate to
RIC=2 (full invalidation of TLB *and* PWC) when a coprocessor is in
use for the context.
Fixes: 03b8abedf4f4 ("cxl: Enable global TLBIs for cxl contexts")
Cc: [email protected] # v4.15+
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Balbir Singh <[email protected]>
[balbirs: fixed spelling and coding style to quiesce checkpatch.pl]
Tested-by: Balbir Singh <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions