patch-2.4.22 linux-2.4.22/arch/ia64/mm/tlb.c

• Lines: 39
• Date: 2003-08-25 04:44:39.000000000 -0700
• Orig file: linux-2.4.21/arch/ia64/mm/tlb.c
• Orig date: 2003-06-13 07:51:29.000000000 -0700

diff -urN linux-2.4.21/arch/ia64/mm/tlb.c linux-2.4.22/arch/ia64/mm/tlb.c
@@ -34,10 +34,10 @@
 		1 << _PAGE_SIZE_4K )
 
 struct ia64_ctx ia64_ctx = {
-	lock:	SPIN_LOCK_UNLOCKED,
-	next:	1,
-	limit:	(1 << 15) - 1,		/* start out with the safe (architected) limit */
-	max_ctx: ~0U
+	.lock =	SPIN_LOCK_UNLOCKED,
+	.next =	1,
+	.limit =(1 << 15) - 1,		/* start out with the safe (architected) limit */
+	.max_ctx = ~0U
 };
 
 /*
@@ -48,6 +48,7 @@
 {
 	unsigned long tsk_context, max_ctx = ia64_ctx.max_ctx;
 	struct task_struct *tsk;
+	int i;
 
 	if (ia64_ctx.next > max_ctx)
 		ia64_ctx.next = 300;	/* skip daemons */
@@ -76,7 +77,14 @@
 			ia64_ctx.limit = tsk_context;
 	}
 	read_unlock(&tasklist_lock);
-	flush_tlb_all();
+	/*
+	 * Can't call flush_tlb_all() here because of race condition with scheduler [EF]
+	 * and because interrupts are disabled during context switch.
+	 */
+	for (i = 0; i < NR_CPUS; ++i)
+		if (i != smp_processor_id())
+			cpu_data(i)->need_tlb_flush = 1;
+	local_flush_tlb_all();
 }
 
 void