Hi list,
finally I "steal" a piece of code from memtest86 3.2, named
cache_off(), invoke it in a module and insmod. I feel immediately the
system is slowed down!
I believe this will definitely disable the cache, though not yet sure
whether both L1 and L2 cache are disabled. Any suggestions?
here is the code below:
static inline void cache_off(void)
{
asm(
"push %eax\n\t"
"movl %cr0,%eax\n\t"
"orl $0x40000000,%eax\n\t" /* Set CD */
"movl %eax,%cr0\n\t"
"wbinvd\n\t"
"pop %eax\n\t");
}
have fun with it...
Yang
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