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| author | Robin Murphy <robin.murphy@arm.com> | 2022-04-20 03:04:16 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2022-05-16 19:11:03 +0100 |
| commit | b4d6bb38f9dc7cd8ccb117c247a41ec12578929c (patch) | |
| tree | 00b2e96bff8c21fe33c11f229c7dc7a76dca07ea /arch/arm64/lib | |
| parent | fb396bb459c1fa3920dd8a9d84680398c65fed75 (diff) | |
| download | linux-b4d6bb38f9dc7cd8ccb117c247a41ec12578929c.tar.bz2 | |
arm64: mte: Clean up user tag accessors
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>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20220420030418.3189040-6-tongtiangen@huawei.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/lib')
| -rw-r--r-- | arch/arm64/lib/mte.S | 4 |
1 files 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 |