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| author | Heiko Carstens | 2012-09-27 10:45:06 +0200 |
|---|---|---|
| committer | Martin Schwidefsky | 2012-10-09 14:16:55 +0200 |
| commit | 85e9d0e5ffabfede5facbac5b0d9b90768bc6e90 (patch) | |
| tree | b158c8bde347cd8cabd24265dfe65884a08db701 /arch/s390/kernel/early.c | |
| parent | s390/facilities: cleanup PFMF and HPAGE machine facility detection (diff) | |
| download | kernel-qcow2-linux-85e9d0e5ffabfede5facbac5b0d9b90768bc6e90.tar.gz kernel-qcow2-linux-85e9d0e5ffabfede5facbac5b0d9b90768bc6e90.tar.xz kernel-qcow2-linux-85e9d0e5ffabfede5facbac5b0d9b90768bc6e90.zip | |
s390/mm: use pfmf instruction to initialize storage keys
Make use of the pfmf instruction, if available, to initialize storage keys
of whole 1MB or 2GB frames instead of initializing every single page with
the sske instruction.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/early.c')
| -rw-r--r-- | arch/s390/kernel/early.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 4c91d078d091..1f0eee9e7daa 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -374,6 +374,8 @@ static __init void detect_machine_facilities(void) S390_lowcore.machine_flags |= MACHINE_FLAG_EDAT1; __ctl_set_bit(0, 23); } + if (test_facility(78)) + S390_lowcore.machine_flags |= MACHINE_FLAG_EDAT2; if (test_facility(3)) S390_lowcore.machine_flags |= MACHINE_FLAG_IDTE; if (test_facility(27)) |