Re: [PATCH] Re: SSE related security hole

H. Peter Anvin
2002-04-20T22:43:31Z

Andrea Arcangeli wrote:
>
> As said in an earlier email it is a matter of memory bandwith, 59 bytes
> of icache and zero data, against 7 bytes of icache and 512bytes of data.
> the 512bytes of data are visibly slower, period. Saving mem bandwith is
> much more important than reducing the number of instructions, even more
> on SMP!
>

It's not 512 bytes of data -- only the part that's actually used is
accessed.

-hpa