diff options
Diffstat (limited to 'arch/i386/kernel/smp.c')
| -rw-r--r-- | arch/i386/kernel/smp.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c index ffc4f65c518..9bd9637ae69 100644 --- a/arch/i386/kernel/smp.c +++ b/arch/i386/kernel/smp.c @@ -375,8 +375,7 @@ static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm, /* * i'm not happy about this global shared spinlock in the * MM hot path, but we'll see how contended it is. - * Temporarily this turns IRQs off, so that lockups are - * detected by the NMI watchdog. + * AK: x86-64 has a faster method that could be ported. */ spin_lock(&tlbstate_lock); @@ -401,7 +400,7 @@ static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm, while (!cpus_empty(flush_cpumask)) /* nothing. lockup detection does not belong here */ - mb(); + cpu_relax(); flush_mm = NULL; flush_va = 0; |