diff options
| -rw-r--r-- | arch/powerpc/mm/mem.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 879e0bc6f82e..2fd57fa48429 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -491,7 +491,8 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, * We don't need to worry about _PAGE_PRESENT here because we are * called with either mm->page_table_lock held or ptl lock held */ - unsigned long access = 0, trap; + unsigned long access, trap; + if (radix_enabled()) return; @@ -506,13 +507,19 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, * * We also avoid filling the hash if not coming from a fault */ - if (current->thread.regs == NULL) - return; - trap = TRAP(current->thread.regs); - if (trap == 0x400) - access |= _PAGE_EXEC; - else if (trap != 0x300) + + trap = current->thread.regs ? TRAP(current->thread.regs) : 0UL; + switch (trap) { + case 0x300: + access = 0UL; + break; + case 0x400: + access = _PAGE_EXEC; + break; + default: return; + } + hash_preload(vma->vm_mm, address, access, trap); #endif /* CONFIG_PPC_STD_MMU */ #if (defined(CONFIG_PPC_BOOK3E_64) || defined(CONFIG_PPC_FSL_BOOK3E)) \ |