Re: [PATCH] Re: SSE related security hole

H. Peter Anvin (hpa@zytor.com)
Sat, 20 Apr 2002 15:43:17 -0700

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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

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