Re: 2.6.0-test4: Unable to handle kernel NULL pointer dereference
From: Hollis Blanchard
Date: Fri Aug 29 2003 - 09:18:32 EST
On Thursday, Aug 28, 2003, at 15:10 US/Central, Andrew Morton wrote:
--- 25/include/asm-i386/processor.h~disable-athlon-prefetch 2003-08-23
13:48:16.000000000 -0700
+++ 25-akpm/include/asm-i386/processor.h 2003-08-23 13:48:16.000000000
-0700
@@ -578,6 +578,8 @@ static inline void rep_nop(void)
#define ARCH_HAS_PREFETCH
extern inline void prefetch(const void *x)
{
+ if (cpu_data[0].x86_vendor == X86_VENDOR_AMD)
+ return;
alternative_input(ASM_NOP4,
"prefetchnta (%1)",
X86_FEATURE_XMM,
Without a comment explaining the problem?
--
Hollis Blanchard
IBM Linux Technology Center
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