Re: Kernel handling of vector registers
On Thu, 2006-02-23 at 17:17 +0100, Joerg Maier wrote:
> Hi,
>
> you cannot use SIMD registers in kernel as far as i know. The kernel does
> not save these registers when changing userspace/kernel mode (i think for
> performance reason) so these registers have to stay untouched when you are
> in kernel mode.
ahhh ... I assumed he was doing userland... if he's doing kernel, he can
still but in a very limited context, like the RAID6 does, though I
wouldn't recommend it unless there is a very very very good reason to do
so.
Ben.
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