diff options
Diffstat (limited to 'arch/powerpc/mm/slb.c')
| -rw-r--r-- | arch/powerpc/mm/slb.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c index 89497fb0428..4d737658669 100644 --- a/arch/powerpc/mm/slb.c +++ b/arch/powerpc/mm/slb.c @@ -247,14 +247,22 @@ void switch_slb(struct task_struct *tsk, struct mm_struct *mm) static inline void patch_slb_encoding(unsigned int *insn_addr, unsigned int immed) { - /* Assume the instruction had a "0" immediate value, just - * "or" in the new value - */ - *insn_addr |= immed; + *insn_addr = (*insn_addr & 0xffff0000) | immed; flush_icache_range((unsigned long)insn_addr, 4+ (unsigned long)insn_addr); } +void slb_set_size(u16 size) +{ + extern unsigned int *slb_compare_rr_to_size; + + if (mmu_slb_size == size) + return; + + mmu_slb_size = size; + patch_slb_encoding(slb_compare_rr_to_size, mmu_slb_size); +} + void slb_initialize(void) { unsigned long linear_llp, vmalloc_llp, io_llp; |