[Qemu-devel] [PATCH v2 7/7] monitor: fix crash for platforms without a CPU 0

[Cédric Le Goater]

On PowerNV, CPU ids start at 0x8 or 0x20, we don't have a CPU 0
anymore. So let's use the first_cpu index to initialize the monitor.

Signed-off-by: Cédric Le Goater <address@hidden>
---

 So that you can dump the cpu list with the monitor :

        (qemu) info cpus
        * CPU #8: nip=0x0000000000000010 thread_id=7742
          CPU #16: nip=0x0000000000000010 thread_id=7740
          CPU #24: nip=0x0000000000000010 thread_id=7740
          CPU #32: nip=0x0000000000000010 thread_id=7740
          CPU #40: nip=0x0000000000000010 thread_id=7740
          CPU #48: nip=0x0000000000000010 thread_id=7740
          CPU #72: nip=0x0000000000000010 thread_id=7740
          CPU #80: nip=0x0000000000000010 thread_id=7740
          CPU #136: nip=0x0000000000000010 thread_id=7740
          CPU #144: nip=0x0000000000000010 thread_id=7740
          CPU #152: nip=0x0000000000000010 thread_id=7740
          CPU #160: nip=0x0000000000000010 thread_id=7740
          CPU #168: nip=0x0000000000000010 thread_id=7740
          CPU #176: nip=0x0000000000000010 thread_id=7740
          CPU #200: nip=0x0000000000000010 thread_id=7740
          CPU #208: nip=0x0000000000000010 thread_id=7740

 monitor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/monitor.c b/monitor.c
index e9009de09a6c..19b8ec14f40e 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1027,7 +1027,7 @@ int monitor_set_cpu(int cpu_index)
 CPUState *mon_get_cpu(void)
 {
     if (!cur_mon->mon_cpu) {
-        monitor_set_cpu(0);
+        monitor_set_cpu(first_cpu->cpu_index);
     }
     cpu_synchronize_state(cur_mon->mon_cpu);
     return cur_mon->mon_cpu;
-- 
2.7.4