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sparc64: Migrate hvcons irq to panicked cpu

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On panic, all other CPUs are stopped except the one which had
hit panic. To keep console alive, we need to migrate hvcons irq
to panicked CPU.

Signed-off-by: Vijay Kumar <vijay.ac.kumar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vijay Kumar
2017-02-01 11:34:38 -08:00
committed by David S. Miller
parent cffb3e7681
commit 7dd4fcf5b7
3 changed files with 15 additions and 2 deletions
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6
arch/sparc/kernel/smp_64.c
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@@ -1452,8 +1452,12 @@ void smp_send_stop(void)
int cpu;
if (tlb_type == hypervisor) {
int this_cpu = smp_processor_id();
#ifdef CONFIG_SERIAL_SUNHV
sunhv_migrate_hvcons_irq(this_cpu);
#endif
for_each_online_cpu(cpu) {
if (cpu == smp_processor_id())
if (cpu == this_cpu)
continue;
set_cpu_online(cpu, false);