diff options
| author | Nicholas Piggin <[email protected]> | 2021-05-28 19:07:30 +1000 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2021-06-10 22:12:13 +1000 |
| commit | 6ffe2c6e6dcefb971e4046f02086c4adadd0b310 (patch) | |
| tree | 43d7e2faab8483ebd512150de075fdcc3b1b2b46 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | 413679e73bdfc2720dc2fa2172b65b7411185fa7 (diff) | |
KVM: PPC: Book3S HV P9: Reduce irq_work vs guest decrementer races
irq_work's use of the DEC SPR is racy with guest<->host switch and guest
entry which flips the DEC interrupt to guest, which could lose a host
work interrupt.
This patch closes one race, and attempts to comment another class of
races.
Signed-off-by: Nicholas Piggin <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions