diff options
Diffstat (limited to 'arch/arm64/lib')
| -rw-r--r-- | arch/arm64/lib/copy_from_user.S | 7 | ||||
| -rw-r--r-- | arch/arm64/lib/copy_page.S | 13 |
2 files changed, 5 insertions, 15 deletions
diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S index 0b90497d4424..4fd67ea03bb0 100644 --- a/arch/arm64/lib/copy_from_user.S +++ b/arch/arm64/lib/copy_from_user.S @@ -79,11 +79,6 @@ ENDPROC(__arch_copy_from_user) .section .fixup,"ax" .align 2 -9998: - sub x0, end, dst -9999: - strb wzr, [dst], #1 // zero remaining buffer space - cmp dst, end - b.lo 9999b +9998: sub x0, end, dst // bytes not copied ret .previous diff --git a/arch/arm64/lib/copy_page.S b/arch/arm64/lib/copy_page.S index 4c1e700840b6..c3cd65e31814 100644 --- a/arch/arm64/lib/copy_page.S +++ b/arch/arm64/lib/copy_page.S @@ -29,14 +29,11 @@ * x1 - src */ ENTRY(copy_page) -alternative_if_not ARM64_HAS_NO_HW_PREFETCH - nop - nop -alternative_else +alternative_if ARM64_HAS_NO_HW_PREFETCH # Prefetch two cache lines ahead. prfm pldl1strm, [x1, #128] prfm pldl1strm, [x1, #256] -alternative_endif +alternative_else_nop_endif ldp x2, x3, [x1] ldp x4, x5, [x1, #16] @@ -52,11 +49,9 @@ alternative_endif 1: subs x18, x18, #128 -alternative_if_not ARM64_HAS_NO_HW_PREFETCH - nop -alternative_else +alternative_if ARM64_HAS_NO_HW_PREFETCH prfm pldl1strm, [x1, #384] -alternative_endif +alternative_else_nop_endif stnp x2, x3, [x0] ldp x2, x3, [x1] |
