Re: [RFC] [PATCH] cache pollution aware __copy_from_user_ll()

Arjan van de Ven
2005-08-16T05:44:20Z

On Tue, 2005-08-16 at 13:17 +0900, Hirokazu Takahashi wrote:
> Hi,
>
> BTW, what are you going to do with the page-faults which may happen
> during __copy_user_zeroing_nocache()? The current process may be blocked
> in the handler for a while and get FPU registers polluted.
> kernel_fpu_begin() won't help the case. This is another issue, though.

__copy_from_user_inatomic

.. that implies it won't sleep actually ;)