diff options
Diffstat (limited to 'arch/powerpc/perf')
| -rw-r--r-- | arch/powerpc/perf/core-book3s.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index e29c846bf35d..78fe34986594 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -2219,6 +2219,12 @@ static void __perf_event_interrupt(struct pt_regs *regs) perf_read_regs(regs); + /* + * If perf interrupts hit in a local_irq_disable (soft-masked) region, + * we consider them as NMIs. This is required to prevent hash faults on + * user addresses when reading callchains. See the NMI test in + * do_hash_page. + */ nmi = perf_intr_is_nmi(regs); if (nmi) nmi_enter(); |