diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2025-02-07 15:48:53 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2025-03-04 17:18:05 +0100 |
| commit | 2e2ff71febfe30963deff1897b7d1d1ceb8628dd (patch) | |
| tree | 9cf44c3acd407d5a873577036dbe9be376645e25 /arch/s390/kernel/early.c | |
| parent | 5643195f2626bc7391720b77d9f7c9b068f4fbe0 (diff) | |
s390/cpufeature: Convert MACHINE_HAS_EDAT1 to cpu_has_edat1()
Convert MACHINE_HAS_... to cpu_has_...() which uses test_facility() instead
of testing the machine_flags lowcore member if the feature is present.
test_facility() generates better code since it results in a static branch
without accessing memory. The branch is patched via alternatives by the
decompressor depending on the availability of the required facility.
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/early.c')
| -rw-r--r-- | arch/s390/kernel/early.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 68685aa23c16..dd9c32e3cf1c 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -237,10 +237,6 @@ static __init void detect_diag9c(void) static __init void detect_machine_facilities(void) { - if (test_facility(8)) { - get_lowcore()->machine_flags |= MACHINE_FLAG_EDAT1; - system_ctl_set_bit(0, CR0_EDAT_BIT); - } if (test_facility(78)) get_lowcore()->machine_flags |= MACHINE_FLAG_EDAT2; if (test_facility(3)) |