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| author | Sven Schnelle <svens@linux.ibm.com> | 2020-03-17 13:37:49 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2020-05-28 12:21:42 +0200 |
| commit | 11886c199d8d62e2469cb404235a4ee7266f01c7 (patch) | |
| tree | b95afcb80a69372c5c2bf784a10649f37eec63d2 | |
| parent | a999eb96fdd4da488ac3085c40e20d61de26f6af (diff) | |
| download | linux-11886c199d8d62e2469cb404235a4ee7266f01c7.tar.bz2 | |
s390: add machine check SIGP
This will be used with the upcoming entry.S changes to signal
that there's a machine check pending that cannot be handled in
the Machine check handler itself.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
| -rw-r--r-- | arch/s390/include/asm/smp.h | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/smp.c | 8 |
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h index 231a51e870fe..7326f110d48c 100644 --- a/arch/s390/include/asm/smp.h +++ b/arch/s390/include/asm/smp.h @@ -58,5 +58,6 @@ extern int smp_rescan_cpus(void); extern void __noreturn cpu_die(void); extern void __cpu_die(unsigned int cpu); extern int __cpu_disable(void); +extern void schedule_mcck_handler(void); #endif /* __ASM_SMP_H */ diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 7eaabbab2213..fc1041257c60 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -61,6 +61,7 @@ enum { ec_schedule = 0, ec_call_function_single, ec_stop_cpu, + ec_mcck_pending, }; enum { @@ -403,6 +404,11 @@ int smp_find_processor_id(u16 address) return -1; } +void schedule_mcck_handler(void) +{ + pcpu_ec_call(pcpu_devices + smp_processor_id(), ec_mcck_pending); +} + bool arch_vcpu_is_preempted(int cpu) { if (test_cpu_flag_of(CIF_ENABLED_WAIT, cpu)) @@ -497,6 +503,8 @@ static void smp_handle_ext_call(void) scheduler_ipi(); if (test_bit(ec_call_function_single, &bits)) generic_smp_call_function_single_interrupt(); + if (test_bit(ec_mcck_pending, &bits)) + s390_handle_mcck(); } static void do_ext_call_interrupt(struct ext_code ext_code, |