From 9d7041eec59fd2059033c58e9e5427468f4446e8 Mon Sep 17 00:00:00 2001
From: andrei <none@none>
Date: Thu, 3 Nov 2005 13:54:33 -0800
Subject: 4873353 panic: mp_cpu_quiesce: cpu_thread != cpu_idle_thread

---
 usr/src/uts/sun4/os/mp_startup.c       |  1 +
 usr/src/uts/sun4/os/mp_states.c        | 10 ++++++----
 usr/src/uts/sun4u/starfire/io/drmach.c |  3 ++-
 usr/src/uts/sun4u/sys/machcpuvar.h     |  3 +++
 usr/src/uts/sun4v/sys/machcpuvar.h     |  3 +++
 5 files changed, 15 insertions(+), 5 deletions(-)

(limited to 'usr/src')

diff --git a/usr/src/uts/sun4/os/mp_startup.c b/usr/src/uts/sun4/os/mp_startup.c
index 1124e2f3fe..682815cd91 100644
--- a/usr/src/uts/sun4/os/mp_startup.c
+++ b/usr/src/uts/sun4/os/mp_startup.c
@@ -167,6 +167,7 @@ common_startup_init(cpu_t *cp, int cpuid)
 	cp->cpu_lwp = NULL;
 	cp->cpu_dispthread = tp;
 	cp->cpu_dispatch_pri = DISP_PRIO(tp);
+	cp->cpu_startup_thread = tp;
 }
 
 /*
diff --git a/usr/src/uts/sun4/os/mp_states.c b/usr/src/uts/sun4/os/mp_states.c
index a764379ac6..c50f595bf1 100644
--- a/usr/src/uts/sun4/os/mp_states.c
+++ b/usr/src/uts/sun4/os/mp_states.c
@@ -237,7 +237,8 @@ mp_cpu_quiesce(cpu_t *cp0)
 
 	for (i = 0; i < sanity_limit; i++) {
 		if (cp->cpu_intr_actv == 0 &&
-		    cp->cpu_thread == cp->cpu_idle_thread) {
+		    (cp->cpu_thread == cp->cpu_idle_thread ||
+		    cp->cpu_thread == cp->cpu_startup_thread)) {
 			found_intr = 0;
 			break;
 		}
@@ -248,9 +249,10 @@ mp_cpu_quiesce(cpu_t *cp0)
 
 		if (cp->cpu_intr_actv) {
 			cmn_err(CE_PANIC, "%s: cpu_intr_actv != 0", f);
-		} else if (cp->cpu_thread != cp->cpu_idle_thread) {
-			cmn_err(CE_PANIC, "%s: cpu_thread != cpu_idle_thread",
-				f);
+		} else if (cp->cpu_thread != cp->cpu_idle_thread &&
+		    cp->cpu_thread != cp->cpu_startup_thread) {
+			cmn_err(CE_PANIC, "%s: CPU %d is not quiesced",
+			    f, cpuid);
 		}
 
 	}
diff --git a/usr/src/uts/sun4u/starfire/io/drmach.c b/usr/src/uts/sun4u/starfire/io/drmach.c
index 7d7ba4346a..fef4ff008f 100644
--- a/usr/src/uts/sun4u/starfire/io/drmach.c
+++ b/usr/src/uts/sun4u/starfire/io/drmach.c
@@ -2610,7 +2610,8 @@ drmach_cpu_shutdown_self(void)
 	(void) spl8();
 
 	ASSERT(cp->cpu_intr_actv == 0);
-	ASSERT(cp->cpu_thread == cp->cpu_idle_thread);
+	ASSERT(cp->cpu_thread == cp->cpu_idle_thread ||
+	    cp->cpu_thread == cp->cpu_startup_thread);
 
 	cp->cpu_flags = CPU_OFFLINE | CPU_QUIESCED | CPU_POWEROFF;
 
diff --git a/usr/src/uts/sun4u/sys/machcpuvar.h b/usr/src/uts/sun4u/sys/machcpuvar.h
index ef0d98e8b5..7351430049 100644
--- a/usr/src/uts/sun4u/sys/machcpuvar.h
+++ b/usr/src/uts/sun4u/sys/machcpuvar.h
@@ -129,10 +129,13 @@ struct	machcpu {
 	 */
 
 	uint64_t	intrstat[PIL_MAX+1][2];
+	kthread_t	*startup_thread;
 };
 
 typedef	struct machcpu	machcpu_t;
 
+#define	cpu_startup_thread	cpu_m.startup_thread
+
 /*
  * Macro to access the "cpu private" data structure.
  */
diff --git a/usr/src/uts/sun4v/sys/machcpuvar.h b/usr/src/uts/sun4v/sys/machcpuvar.h
index 2ed0b9dddc..a49e693e17 100644
--- a/usr/src/uts/sun4v/sys/machcpuvar.h
+++ b/usr/src/uts/sun4v/sys/machcpuvar.h
@@ -158,10 +158,13 @@ struct	machcpu {
 	uint16_t	*cpu_list;		/* uint16_t [NCPU] */
 	uint64_t	cpu_list_ra;		/* cpu list ra */
 	id_t		cpu_ipipe;		/* cpu exec unit id */
+	kthread_t	*startup_thread;
 };
 
 typedef	struct machcpu	machcpu_t;
 
+#define	cpu_startup_thread	cpu_m.startup_thread
+
 /*
  * Macro to access the "cpu private" data structure.
  */
-- 
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