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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-09-10 16:50:00 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-09-15 19:51:56 -0400 |
| commit | 4855bd255f9fb429d296dc3c620f1b563d20353e (patch) | |
| tree | 3efb0a7b31da80ea65917bd7b5d8832576269bc3 /arch/arm64/lib/copy_from_user.S | |
| parent | 91344493b7da9487a8dbc1109d7486e51c8e5235 (diff) | |
| download | lwn-4855bd255f9fb429d296dc3c620f1b563d20353e.tar.gz lwn-4855bd255f9fb429d296dc3c620f1b563d20353e.zip | |
arm64: don't zero in __copy_from_user{,_inatomic}
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/arm64/lib/copy_from_user.S')
| -rw-r--r-- | arch/arm64/lib/copy_from_user.S | 7 |
1 files changed, 1 insertions, 6 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 |