http://defect.opensolaris.org/bz/show_bug.cgi?id=4817
Bill Holler <bill.holler at sun.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |CAUSEKNOWN
--- Comment #1 from Bill Holler <bill.holler at sun.com> 2008-11-11 14:00:33
---
Here is a possible fix:
diff -r c6a3cd4afc8e usr/src/uts/i86pc/io/hpet_acpi.c
--- a/usr/src/uts/i86pc/io/hpet_acpi.c Mon Nov 10 17:58:15 2008 -0800
+++ b/usr/src/uts/i86pc/io/hpet_acpi.c Tue Nov 11 14:01:52 2008 -0800
@@ -1041,9 +1041,17 @@
* in case the non-deep-c disp_enq_thread function will not
* work with CPUs in deep C-State.
*/
- mutex_enter(&hpet_proxy_lock);
+ cli();
+ while (!mutex_tryenter(&hpet_proxy_lock)) {
+ /*
+ * spin
+ */
+ sti();
+ cli();
+ }
hpet_expire_all();
mutex_exit(&hpet_proxy_lock);
+ sti();
/*
* Disable timer interrupt generation.
@@ -1171,9 +1179,17 @@
* Wakeup all CPUs currently using the HPET as an LAPIC proxy
* before disabling the interrupt.
*/
- mutex_enter(&hpet_proxy_lock);
+ cli();
+ while (!mutex_tryenter(&hpet_proxy_lock)) {
+ /*
+ * spin
+ */
+ sti();
+ cli();
+ }
hpet_expire_all();
mutex_exit(&hpet_proxy_lock);
+ sti();
hpet_disable_timer(&hpet_info, hpet_info.cstate_timer.timer);
hpet_info.disable_cpu_deep_idle++;
--
Configure bugmail: http://defect.opensolaris.org/bz/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
