patch-2.1.95 linux/include/asm-i386/system.h

• Lines: 14
• Date: Fri Apr 10 10:08:11 1998
• Orig file: v2.1.94/linux/include/asm-i386/system.h
• Orig date: Thu Feb 12 20:56:12 1998

diff -u --recursive --new-file v2.1.94/linux/include/asm-i386/system.h linux/include/asm-i386/system.h
@@ -215,7 +215,12 @@
 	return x;
 }
 
-#define mb()  __asm__ __volatile__ (""   : : :"memory")
+/*
+ * Force strict CPU ordering.
+ * And yes, this is required on UP too when we're talking
+ * to devices.
+ */
+#define mb() 	__asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory")
 
 /* interrupt control.. */
 #define __sti() __asm__ __volatile__ ("sti": : :"memory")