From: Glauber Costa <glommer@redhat.com>
Date: Tue, 9 Jun 2009 16:15:18 +0000 (-0400)
Subject: provide cpu_index to env mapping
X-Git-Tag: v0.11.0-rc0~353
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=950f147249643635289003d7dd291915ad330b29;p=qemu-xen-4.5-testing.git

provide cpu_index to env mapping

There are some people interested in, given a cpu number,
pick its CPUState. KVM is an example, although not yet in tree.
This patch provides a way of doing that.

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---

diff --git a/cpu-all.h b/cpu-all.h
index 8f078c415..48a9a2c11 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -743,6 +743,7 @@ int page_check_range(target_ulong start, target_ulong len, int flags);
 
 void cpu_exec_init_all(unsigned long tb_size);
 CPUState *cpu_copy(CPUState *env);
+CPUState *qemu_get_cpu(int cpu);
 
 void cpu_dump_state(CPUState *env, FILE *f,
                     int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
diff --git a/exec.c b/exec.c
index 3023f4418..bbaf0b689 100644
--- a/exec.c
+++ b/exec.c
@@ -541,6 +541,19 @@ static int cpu_common_load(QEMUFile *f, void *opaque, int version_id)
 }
 #endif
 
+CPUState *qemu_get_cpu(int cpu)
+{
+    CPUState *env = first_cpu;
+
+    while (env) {
+        if (env->cpu_index == cpu)
+            break;
+        env = env->next_cpu;
+    }
+
+    return env;
+}
+
 void cpu_exec_init(CPUState *env)
 {
     CPUState **penv;