diff options
| -rw-r--r-- | arch/arm64/mm/cache.S | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/arm64/mm/cache.S b/arch/arm64/mm/cache.S index e803a62e0e4..fda756875fa 100644 --- a/arch/arm64/mm/cache.S +++ b/arch/arm64/mm/cache.S @@ -183,12 +183,19 @@ ENTRY(__inval_cache_range) __dma_inv_range: dcache_line_size x2, x3 sub x3, x2, #1 - bic x0, x0, x3 + tst x1, x3 // end cache line aligned? bic x1, x1, x3 -1: dc ivac, x0 // invalidate D / U line - add x0, x0, x2 + b.eq 1f + dc civac, x1 // clean & invalidate D / U line +1: tst x0, x3 // start cache line aligned? + bic x0, x0, x3 + b.eq 2f + dc civac, x0 // clean & invalidate D / U line + b 3f +2: dc ivac, x0 // invalidate D / U line +3: add x0, x0, x2 cmp x0, x1 - b.lo 1b + b.lo 2b dsb sy ret ENDPROC(__inval_cache_range) |