diff options
Diffstat (limited to 'arch/alpha/include/asm/tlbflush.h')
| -rw-r--r-- | arch/alpha/include/asm/tlbflush.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/alpha/include/asm/tlbflush.h b/arch/alpha/include/asm/tlbflush.h index ba4b359d6c39..0c8529997f54 100644 --- a/arch/alpha/include/asm/tlbflush.h +++ b/arch/alpha/include/asm/tlbflush.h @@ -58,7 +58,9 @@ flush_tlb_other(struct mm_struct *mm) unsigned long *mmc = &mm->context[smp_processor_id()]; /* Check it's not zero first to avoid cacheline ping pong when possible. */ - if (*mmc) *mmc = 0; + + if (READ_ONCE(*mmc)) + WRITE_ONCE(*mmc, 0); } #ifndef CONFIG_SMP |