Andi Kleen [off-list ref] wrote:

Hallo,

Currently there are two twofish and two aes implementions on x86.
Worse when both are enabled as modules a modprobe aes
will get the C version which seems to be slower on K8 
and about the same speed on Core2 on my tests.

Hi Andi:

Are you sure you get the C version when both are built-in
or loaded as modules? If so then we have a bug in the priority
code.

If you only have the C version loaded then that is understandable
since the module loading code doesn't know about the other one.

Is there a specific reason why anybody would prefer the C functions
over the assembler functions? 

We don't, but the system is meant to allow multiple
implementations to coexist and picking the best one
at run-time.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} [off-list ref]
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