@@ -386,6 +386,10 @@ int pSeries_system_reset_exception(struct pt_regs *regs)
}
fwnmi_release_errinfo();
}
+
+ if (smp_handle_nmi_ipi(regs))
+ return 1;
+
return 0; /* need to perform reset */
}
@@ -196,6 +196,27 @@ static void pSeries_cause_ipi_mux(int cpu, unsigned long data)
xics_cause_ipi(cpu, data);
}
+static int pseries_cause_nmi_ipi(int cpu)
+{
+ int hwcpu;
+
+ if (cpu == NMI_IPI_ALL_OTHERS) {
+ hwcpu = H_SIGNAL_SYS_RESET_ALL_OTHERS;
+ } else {
+ if (cpu < 0) {
+ WARN_ONCE(true, "incorrect cpu parameter %d", cpu);
+ return 0;
+ }
+
+ hwcpu = get_hard_smp_processor_id(cpu);
+ }
+
+ if (plapr_signal_sys_reset(hwcpu) == H_SUCCESS)
+ return 1;
+
+ return 0;
+}
+
static __init void pSeries_smp_probe(void)
{
xics_smp_probe();
@@ -209,7 +230,7 @@ static __init void pSeries_smp_probe(void)
static struct smp_ops_t pseries_smp_ops = {
.message_pass = NULL, /* Use smp_muxed_ipi_message_pass */
.cause_ipi = NULL, /* Filled at runtime by pSeries_smp_probe() */
- .cause_nmi_ipi = NULL,
+ .cause_nmi_ipi = pseries_cause_nmi_ipi,
.probe = pSeries_smp_probe,
.kick_cpu = smp_pSeries_kick_cpu,
.setup_cpu = smp_setup_cpu,
Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/platforms/pseries/ras.c | 4 ++++ arch/powerpc/platforms/pseries/smp.c | 23 ++++++++++++++++++++++- 2 files changed, 26 insertions(+), 1 deletion(-)