From: Glauber Costa <[EMAIL PROTECTED]>
in this patch, cpu_set is introduced to qemu monitor
semantics is : cpu_set x online|offline.
it will then tell the acpi backend to signal cpu x.
Signed-off-by: Glauber Costa <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
diff --git a/qemu/hw/acpi.c b/qemu/hw/acpi.c
index e21ded0..d2e2e3e 100644
--- a/qemu/hw/acpi.c
+++ b/qemu/hw/acpi.c
@@ -533,3 +533,7 @@ void qemu_system_powerdown(void)
}
}
#endif
+
+void qemu_system_cpu_hot_add(int cpu, int state)
+{
+}
diff --git a/qemu/monitor.c b/qemu/monitor.c
index e8022c8..09f84a9 100644
--- a/qemu/monitor.c
+++ b/qemu/monitor.c
@@ -345,6 +345,21 @@ static void do_cpu_set(int index)
term_printf("Invalid CPU index\n");
}
+static void do_cpu_set_nr(int value, const char *status)
+{
+ int state;
+
+ if (!strcmp(status, "online"))
+ state = 1;
+ else if (!strcmp(status, "offline"))
+ state = 0;
+ else {
+ term_printf("invalid status: %s\n", status);
+ return;
+ }
+ qemu_system_cpu_hot_add(value, state);
+}
+
static void do_info_jit(void)
{
dump_exec_info(NULL, monitor_fprintf);
@@ -1338,6 +1353,7 @@ static term_cmd_t term_cmds[] = {
"", "cancel the current VM migration" },
{ "migrate_set_speed", "s", do_migrate_set_speed,
"value", "set maximum speed (in bytes) for migrations" },
+ { "cpu_set", "is", do_cpu_set_nr, "cpu [online|offline]", "change cpu
state" },
{ NULL, NULL, },
};
diff --git a/qemu/sysemu.h b/qemu/sysemu.h
index 1599867..cdbffc0 100644
--- a/qemu/sysemu.h
+++ b/qemu/sysemu.h
@@ -154,6 +154,9 @@ int extboot_drive;
extern int drive_get_index(BlockInterfaceType type, int bus, int unit);
extern int drive_get_max_bus(BlockInterfaceType type);
+/* acpi */
+void qemu_system_cpu_hot_add(int cpu, int state);
+
/* vmchannel devices */
#define MAX_VMCHANNEL_DEVICES 4
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