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| author |  Uros Bizjak <ubizjak@gmail.com>
| 2023-11-09 21:09:56 +0100 |
|---|---|---|
| committer |  Borislav Petkov (AMD) <bp@alien8.de>
| 2023-12-13 13:35:38 +0100 |
| commit | 7d28365a06af74cee015a448d32ab6e98cd05cfb (patch) | |
| tree | 70fb5cad9cec88a0c061ecaa66f30fc2e9b0cec9 /arch/x86/crypto/sha512-avx-asm.S | |
| parent | x86/docs: Remove reference to syscall trampoline in PTI (diff) | |
| download | linux-7d28365a06af74cee015a448d32ab6e98cd05cfb.tar.gz linux-7d28365a06af74cee015a448d32ab6e98cd05cfb.tar.bz2 linux-7d28365a06af74cee015a448d32ab6e98cd05cfb.zip | |
x86/head_64: Use TESTB instead of TESTL in secondary_startup_64_no_verify()
There is no need to use TESTL when checking the least-significant bit
with a TEST instruction. Use TESTB, which is three bytes shorter:
f6 05 00 00 00 00 01 testb $0x1,0x0(%rip)
vs:
f7 05 00 00 00 00 01 testl $0x1,0x0(%rip)
00 00 00
for the same effect.
No functional changes intended.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20231109201032.4439-1-ubizjak@gmail.com
Diffstat (limited to 'arch/x86/crypto/sha512-avx-asm.S')
0 files changed, 0 insertions, 0 deletions