patch-2.4.0-test7 linux/arch/ia64/kernel/irq_ia64.c

• Lines: 14
• Date: Fri Aug 11 19:09:06 2000
• Orig file: v2.4.0-test6/linux/arch/ia64/kernel/irq_ia64.c
• Orig date: Fri Jun 23 21:55:07 2000

diff -u --recursive --new-file v2.4.0-test6/linux/arch/ia64/kernel/irq_ia64.c linux/arch/ia64/kernel/irq_ia64.c
@@ -117,6 +117,13 @@
 	{
 		unsigned long bsp, sp;
 
+		/*
+		 * Note: if the interrupt happened while executing in
+		 * the context switch routine (ia64_switch_to), we may
+		 * get a spurious stack overflow here.  This is
+		 * because the register and the memory stack are not
+		 * switched atomically.
+		 */
 		asm ("mov %0=ar.bsp" : "=r"(bsp));
 		asm ("mov %0=sp" : "=r"(sp));