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Re: [Xen-devel] Side channel attack



Hi Zakirasafi,

> unsigned int timestamp(void)
> {
> unsigned int bottom;
> unsigned int top;
> *asm volatile(".byte 15;.byte 49" : "=a"(bottom),"=d"(top)); return bottom;*
> }

It is ‘RDTSC’ instruction.

Besides, I am happy that someone is also working on side channel attack on Xen. 
Maybe we can contact in private.

Weijie.



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