diff options
Diffstat (limited to 'arch/powerpc/mm/slb.c')
| -rw-r--r-- | arch/powerpc/mm/slb.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c index 5b7038f248b..227056c21ee 100644 --- a/arch/powerpc/mm/slb.c +++ b/arch/powerpc/mm/slb.c @@ -218,23 +218,18 @@ void switch_slb(struct task_struct *tsk, struct mm_struct *mm) else unmapped_base = TASK_UNMAPPED_BASE_USER64; - if (is_kernel_addr(pc)) - return; - slb_allocate(pc); - - if (esids_match(pc,stack)) + if (is_kernel_addr(pc) || is_kernel_addr(stack) || + is_kernel_addr(unmapped_base)) return; - if (is_kernel_addr(stack)) - return; - slb_allocate(stack); + slb_allocate(pc); - if (esids_match(pc,unmapped_base) || esids_match(stack,unmapped_base)) - return; + if (!esids_match(pc, stack)) + slb_allocate(stack); - if (is_kernel_addr(unmapped_base)) - return; - slb_allocate(unmapped_base); + if (!esids_match(pc, unmapped_base) && + !esids_match(stack, unmapped_base)) + slb_allocate(unmapped_base); } static inline void patch_slb_encoding(unsigned int *insn_addr, |