diff options
| -rw-r--r-- | arch/mips/mm/c-r4k.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 0138cb2e456..df04a315d83 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -381,17 +381,21 @@ static inline void local_r4k_flush_cache_mm(void * args) if (!cpu_context(smp_processor_id(), mm)) return; - r4k_blast_dcache(); - /* * Kludge alert. For obscure reasons R4000SC and R4400SC go nuts if we * only flush the primary caches but R10000 and R12000 behave sane ... + * R4000SC and R4400SC indexed S-cache ops also invalidate primary + * caches, so we can bail out early. */ if (current_cpu_data.cputype == CPU_R4000SC || current_cpu_data.cputype == CPU_R4000MC || current_cpu_data.cputype == CPU_R4400SC || - current_cpu_data.cputype == CPU_R4400MC) + current_cpu_data.cputype == CPU_R4400MC) { r4k_blast_scache(); + return; + } + + r4k_blast_dcache(); } static void r4k_flush_cache_mm(struct mm_struct *mm) |