diff options
Diffstat (limited to 'arch/powerpc/mm/slb.c')
| -rw-r--r-- | arch/powerpc/mm/slb.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c index 906daeda59a..cf8705e32d6 100644 --- a/arch/powerpc/mm/slb.c +++ b/arch/powerpc/mm/slb.c @@ -30,7 +30,7 @@ #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) #else -#define DBG(fmt...) +#define DBG pr_debug #endif extern void slb_allocate_realmode(unsigned long ea); @@ -44,13 +44,13 @@ static void slb_allocate(unsigned long ea) slb_allocate_realmode(ea); } +#define slb_esid_mask(ssize) \ + (((ssize) == MMU_SEGSIZE_256M)? ESID_MASK: ESID_MASK_1T) + static inline unsigned long mk_esid_data(unsigned long ea, int ssize, unsigned long slot) { - unsigned long mask; - - mask = (ssize == MMU_SEGSIZE_256M)? ESID_MASK: ESID_MASK_1T; - return (ea & mask) | SLB_ESID_V | slot; + return (ea & slb_esid_mask(ssize)) | SLB_ESID_V | slot; } #define slb_vsid_shift(ssize) \ @@ -279,8 +279,8 @@ void slb_initialize(void) patch_slb_encoding(slb_compare_rr_to_size, mmu_slb_size); - DBG("SLB: linear LLP = %04x\n", linear_llp); - DBG("SLB: io LLP = %04x\n", io_llp); + DBG("SLB: linear LLP = %04lx\n", linear_llp); + DBG("SLB: io LLP = %04lx\n", io_llp); } get_paca()->stab_rr = SLB_NUM_BOLTED; @@ -301,11 +301,16 @@ void slb_initialize(void) create_shadowed_slbe(VMALLOC_START, mmu_kernel_ssize, vflags, 1); + /* For the boot cpu, we're running on the stack in init_thread_union, + * which is in the first segment of the linear mapping, and also + * get_paca()->kstack hasn't been initialized yet. + * For secondary cpus, we need to bolt the kernel stack entry now. + */ slb_shadow_clear(2); + if (raw_smp_processor_id() != boot_cpuid && + (get_paca()->kstack & slb_esid_mask(mmu_kernel_ssize)) > PAGE_OFFSET) + create_shadowed_slbe(get_paca()->kstack, + mmu_kernel_ssize, lflags, 2); - /* We don't bolt the stack for the time being - we're in boot, - * so the stack is in the bolted segment. By the time it goes - * elsewhere, we'll call _switch() which will bolt in the new - * one. */ asm volatile("isync":::"memory"); } |