Stress tested on 8way PIII 700, Dave, does the C3 have sfence?
Index: linux-2.5.66/arch/i386/Kconfig
===================================================================
RCS file: /build/cvsroot/linux-2.5.66/arch/i386/Kconfig,v
retrieving revision 1.1.1.1
diff -u -p -B -r1.1.1.1 Kconfig
--- linux-2.5.66/arch/i386/Kconfig 24 Mar 2003 23:40:26 -0000 1.1.1.1
+++ linux-2.5.66/arch/i386/Kconfig 1 Apr 2003 08:04:42 -0000
@@ -368,6 +368,11 @@ config X86_PREFETCH
depends on MPENTIUMIII || MPENTIUM4 || MVIAC3_2
default y
+config X86_SSE
+ bool
+ depends on MK7 || MPENTIUMIII || MVIAC3_2
+ default y
+
config X86_SSE2
bool
depends on MK8 || MPENTIUM4
Index: linux-2.5.66/include/asm-i386/system.h
===================================================================
RCS file: /build/cvsroot/linux-2.5.66/include/asm-i386/system.h,v
retrieving revision 1.1.1.1
diff -u -p -B -r1.1.1.1 system.h
--- linux-2.5.66/include/asm-i386/system.h 24 Mar 2003 23:40:20 -0000 1.1.1.1
+++ linux-2.5.66/include/asm-i386/system.h 1 Apr 2003 05:39:00 -0000
@@ -355,11 +355,15 @@ static inline unsigned long __cmpxchg(vo
#define read_barrier_depends() do { } while(0)
+#ifdef CONFIG_X86_SSE
+#define wmb() __asm__ __volatile__ ("sfence;": : :"memory")
+#else
#ifdef CONFIG_X86_OOSTORE
#define wmb() __asm__ __volatile__ ("lock; addl $0,0(%%esp)": : :"memory")
#else
#define wmb() __asm__ __volatile__ ("": : :"memory")
#endif
+#endif /* CONFIG_X86_SSE */
#ifdef CONFIG_SMP
#define smp_mb() mb()
-
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This archive was generated by hypermail 2b29 : Mon Apr 07 2003 - 22:00:12 EST