Messages in this thread | | | Date | Sat, 9 Aug 2008 22:29:18 +0800 | From | Herbert Xu <> | Subject | Re: Kernel oops with 2.6.26, padlock and ipsec: probably problem with fpu state changes |
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On Sat, Aug 09, 2008 at 08:38:30AM +0800, Herbert Xu wrote: > > If there is a significant degradation I suggest that we back out > the FPU changes. Making your competitor's processor go slow is > not a nice thing to do, especially when you've just released a > processor in the same space.
OK I take that back, Intel (and AMD) processors are equally affected by this. For a start, the newly added Intel crc32c driver suffers from exactly the same problem since the instruction used is also SSE.
According to
http://softwarecommunity.intel.com/articles/eng/3788.htm
the Intel AES instructions are also SSE so they too will suffer from this.
Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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