diff options
Diffstat (limited to 'arch/powerpc/mm/slb.c')
| -rw-r--r-- | arch/powerpc/mm/slb.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c index ff1811ac6c8..4bee1cfa9de 100644 --- a/arch/powerpc/mm/slb.c +++ b/arch/powerpc/mm/slb.c @@ -59,14 +59,12 @@ static inline void slb_shadow_update(unsigned long ea, { /* * Clear the ESID first so the entry is not valid while we are - * updating it. + * updating it. No write barriers are needed here, provided + * we only update the current CPU's SLB shadow buffer. */ get_slb_shadow()->save_area[entry].esid = 0; - smp_wmb(); get_slb_shadow()->save_area[entry].vsid = mk_vsid_data(ea, flags); - smp_wmb(); get_slb_shadow()->save_area[entry].esid = mk_esid_data(ea, entry); - smp_wmb(); } static inline void slb_shadow_clear(unsigned long entry) |