diff options
Diffstat (limited to 'arch/arc/include/asm/tlb.h')
| -rw-r--r-- | arch/arc/include/asm/tlb.h | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/arch/arc/include/asm/tlb.h b/arch/arc/include/asm/tlb.h index 3eb2ce0bdfa3..85b6df839bd7 100644 --- a/arch/arc/include/asm/tlb.h +++ b/arch/arc/include/asm/tlb.h @@ -21,20 +21,35 @@ #ifndef __ASSEMBLY__ -#define tlb_flush(tlb) local_flush_tlb_mm((tlb)->mm) +#define tlb_flush(tlb) \ +do { \ + if (tlb->fullmm) \ + flush_tlb_mm((tlb)->mm); \ +} while (0) /* * This pair is called at time of munmap/exit to flush cache and TLB entries * for mappings being torn down. - * 1) cache-flush part -implemented via tlb_start_vma( ) can be NOP (for now) - * as we don't support aliasing configs in our VIPT D$. - * 2) tlb-flush part - implemted via tlb_end_vma( ) can be NOP as well- - * albiet for difft reasons - its better handled by moving to new ASID + * 1) cache-flush part -implemented via tlb_start_vma( ) for VIPT aliasing D$ + * 2) tlb-flush part - implemted via tlb_end_vma( ) flushes the TLB range * * Note, read http://lkml.org/lkml/2004/1/15/6 */ +#ifndef CONFIG_ARC_CACHE_VIPT_ALIASING #define tlb_start_vma(tlb, vma) -#define tlb_end_vma(tlb, vma) +#else +#define tlb_start_vma(tlb, vma) \ +do { \ + if (!tlb->fullmm) \ + flush_cache_range(vma, vma->vm_start, vma->vm_end); \ +} while(0) +#endif + +#define tlb_end_vma(tlb, vma) \ +do { \ + if (!tlb->fullmm) \ + flush_tlb_range(vma, vma->vm_start, vma->vm_end); \ +} while (0) #define __tlb_remove_tlb_entry(tlb, ptep, address) |