diff options
Diffstat (limited to 'arch/powerpc/mm/mem.c')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index f00f09a77f12..f668fa9ba804 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -472,40 +472,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, { #ifdef CONFIG_PPC_STD_MMU unsigned long access = 0, trap; -#endif - unsigned long pfn = pte_pfn(pte); - - /* handle i-cache coherency */ - if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE) && - !cpu_has_feature(CPU_FTR_NOEXECUTE) && - pfn_valid(pfn)) { - struct page *page = pfn_to_page(pfn); -#ifdef CONFIG_8xx - /* On 8xx, cache control instructions (particularly - * "dcbst" from flush_dcache_icache) fault as write - * operation if there is an unpopulated TLB entry - * for the address in question. To workaround that, - * we invalidate the TLB here, thus avoiding dcbst - * misbehaviour. - */ - _tlbil_va(address, 0 /* 8xx doesn't care about PID */); -#endif - /* The _PAGE_USER test should really be _PAGE_EXEC, but - * older glibc versions execute some code from no-exec - * pages, which for now we are supporting. If exec-only - * pages are ever implemented, this will have to change. - */ - if (!PageReserved(page) && (pte_val(pte) & _PAGE_USER) - && !test_bit(PG_arch_1, &page->flags)) { - if (vma->vm_mm == current->active_mm) { - __flush_dcache_icache((void *) address); - } else - flush_dcache_icache_page(page); - set_bit(PG_arch_1, &page->flags); - } - } -#ifdef CONFIG_PPC_STD_MMU /* We only want HPTEs for linux PTEs that have _PAGE_ACCESSED set */ if (!pte_young(pte) || address >= TASK_SIZE) return; |