[Xen-devel] [PATCH][PV_OPS_DOM0] Fix domain0 hang when cpuidle is disabled in Xen

["Yu, Ke" <ke.yu@xxxxxxxxx>]

    Fix the issue of domain0 hang when cpuidle is disabled in Xen
    
    when cpuidle is disabled in xen, domain0 will use native cpuidle driver to 
enter real C state, which is not allowed and will cause domain0 hang. this 
patch change the condition check to fix this issue.
    
    Signed-off-by: Yu Ke <ke.yu@xxxxxxxxx>

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index c2e24ac..a7308bb 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1146,7 +1146,7 @@ int acpi_processor_cst_has_changed(struct acpi_processor 
*pr)
        if (!pr->flags.power_setup_done)
                return -ENODEV;
 
-    if (processor_cntl_xen_pm()) {
+    if (xen_initial_domain()) {
                acpi_processor_get_power_info(pr);
                processor_cntl_xen_notify(pr,
                        PROCESSOR_PM_CHANGE, PM_TYPE_IDLE);
@@ -1216,7 +1216,7 @@ int __cpuinit acpi_processor_power_init(struct 
acpi_processor *pr,
         * platforms that only support C1.
         */
        if (pr->flags.power) {
-               if (processor_cntl_xen_pm())
+               if (xen_initial_domain())
                        processor_cntl_xen_notify(pr,
                                        PROCESSOR_PM_INIT, PM_TYPE_IDLE);
                else {

Attachment: cpuidle_dom0_hang.patch
Description: cpuidle_dom0_hang.patch

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel