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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-01-16 07:03:44 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-02-05 13:49:16 +0100 |
| commit | cf1489984641369611556bf00c48f945c77bcf02 (patch) | |
| tree | db97d15f77022fd35bea4f20274efa965bb5230f /arch/s390/kernel/smp.c | |
| parent | s390: add optimized array_index_mask_nospec (diff) | |
| download | linux-dev-cf1489984641369611556bf00c48f945c77bcf02.tar.xz linux-dev-cf1489984641369611556bf00c48f945c77bcf02.zip | |
s390/alternative: use a copy of the facility bit mask
To be able to switch off specific CPU alternatives with kernel parameters
make a copy of the facility bit mask provided by STFLE and use the copy
for the decision to apply an alternative.
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/smp.c')
| -rw-r--r-- | arch/s390/kernel/smp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index a919b2f0141d..fc28c9571647 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -266,7 +266,9 @@ static void pcpu_prepare_secondary(struct pcpu *pcpu, int cpu) __ctl_store(lc->cregs_save_area, 0, 15); save_access_regs((unsigned int *) lc->access_regs_save_area); memcpy(lc->stfle_fac_list, S390_lowcore.stfle_fac_list, - MAX_FACILITY_BIT/8); + sizeof(lc->stfle_fac_list)); + memcpy(lc->alt_stfle_fac_list, S390_lowcore.alt_stfle_fac_list, + sizeof(lc->alt_stfle_fac_list)); arch_spin_lock_setup(cpu); } |