Messages in this thread Patch in this message | | | From | Tong Tiangen <> | Subject | [PATCH -next v4 5/7] arm64: mte: Clean up user tag accessors | Date | Wed, 20 Apr 2022 03:04:16 +0000 |
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From: Robin Murphy <robin.murphy@arm.com>
Invoking user_ldst to explicitly add a post-increment of 0 is silly. Just use a normal USER() annotation and save the redundant instruction.
Signed-off-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Tong Tiangen <tongtiangen@huawei.com> --- arch/arm64/lib/mte.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/lib/mte.S b/arch/arm64/lib/mte.S index 8590af3c98c0..eeb9e45bcce8 100644 --- a/arch/arm64/lib/mte.S +++ b/arch/arm64/lib/mte.S @@ -93,7 +93,7 @@ SYM_FUNC_START(mte_copy_tags_from_user) mov x3, x1 cbz x2, 2f 1: - user_ldst 2f, ldtrb, w4, x1, 0 +USER(2f, ldtrb w4, [x1]) lsl x4, x4, #MTE_TAG_SHIFT stg x4, [x0], #MTE_GRANULE_SIZE add x1, x1, #1 @@ -120,7 +120,7 @@ SYM_FUNC_START(mte_copy_tags_to_user) 1: ldg x4, [x1] ubfx x4, x4, #MTE_TAG_SHIFT, #MTE_TAG_SIZE - user_ldst 2f, sttrb, w4, x0, 0 +USER(2f, sttrb w4, [x0]) add x0, x0, #1 add x1, x1, #MTE_GRANULE_SIZE subs x2, x2, #1 -- 2.25.1
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