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| author | Heiko Carstens <hca@linux.ibm.com> | 2023-12-01 17:42:19 +0300 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2023-12-11 16:33:07 +0300 |
| commit | 18564756ab328dfdc84d09b8150f5e4d2bb96753 (patch) | |
| tree | ea68f85f88dccdc0e67481e04879d240db31f20f /arch/s390/crypto | |
| parent | 68422c0069990e5fe2a7dc2c6c995a48c0bdec26 (diff) | |
| download | linux-18564756ab328dfdc84d09b8150f5e4d2bb96753.tar.xz | |
s390/fpu: get rid of MACHINE_HAS_VX
Get rid of MACHINE_HAS_VX and replace it with cpu_has_vx() which is a
short readable wrapper for "test_facility(129)".
Facility bit 129 is set if the vector facility is present. test_facility()
returns also true for all bits which are set in the architecture level set
of the cpu that the kernel is compiled for. This means that
test_facility(129) is a compile time constant which returns true for z13
and later, since the vector facility bit is part of the z13 kernel ALS.
In result the compiled code will have less runtime checks, and less code.
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'arch/s390/crypto')
| -rw-r--r-- | arch/s390/crypto/chacha-glue.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/crypto/chacha-glue.c b/arch/s390/crypto/chacha-glue.c index 5fae187f947a..ed9959e6f714 100644 --- a/arch/s390/crypto/chacha-glue.c +++ b/arch/s390/crypto/chacha-glue.c @@ -82,7 +82,7 @@ void chacha_crypt_arch(u32 *state, u8 *dst, const u8 *src, * it cannot handle a block of data or less, but otherwise * it can handle data of arbitrary size */ - if (bytes <= CHACHA_BLOCK_SIZE || nrounds != 20 || !MACHINE_HAS_VX) + if (bytes <= CHACHA_BLOCK_SIZE || nrounds != 20 || !cpu_has_vx()) chacha_crypt_generic(state, dst, src, bytes, nrounds); else chacha20_crypt_s390(state, dst, src, bytes, |