commit 5ce46cb34eecec0bc94a4b1394763f9a1bbe20c3
author Eduardo Habkost <ehabkost@redhat.com> Wed Jul 26 15:44:35 2017 -0300
committer Eduardo Habkost <ehabkost@redhat.com> Fri Sep 01 11:54:24 2017 -0300
tree 7bd400d87bc3fc95068e397bd9f0a947e9e790e8
parent 3beacfb98ba5f594dff4a4541401f2849e0a9ec6

cpu: cpu_by_arch_id() helper

The helper can be used for CPU object lookup using the CPU's
arch-specific ID (the one returned by CPUClass::get_arch_id()).

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
[Yi Wang: Added documentation comments]
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Signed-off-by: Yun Liu <liu.yunh@zte.com.cn>
[ehabkost: extracted cpu_by_arch_id() to a separate patch]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

qom/cpu.c

diff --git a/qom/cpu.c b/qom/cpu.c
index 4f38db0..e6210d5 100644
--- a/qom/cpu.c
+++ b/qom/cpu.c
@@ -34,7 +34,7 @@
 
 CPUInterruptHandler cpu_interrupt_handler;
 
-bool cpu_exists(int64_t id)
+CPUState *cpu_by_arch_id(int64_t id)
 {
     CPUState *cpu;
 
@@ -42,10 +42,15 @@
         CPUClass *cc = CPU_GET_CLASS(cpu);
 
         if (cc->get_arch_id(cpu) == id) {
-            return true;
+            return cpu;
         }
     }
-    return false;
+    return NULL;
+}
+
+bool cpu_exists(int64_t id)
+{
+    return !!cpu_by_arch_id(id);
 }
 
 CPUState *cpu_generic_init(const char *typename, const char *cpu_model)