Messages in this thread | | | Subject | Re: [RFC] [PATCH] cache pollution aware __copy_from_user_ll() | From | Arjan van de Ven <> | Date | Tue, 16 Aug 2005 07:43:35 +0200 |
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On Tue, 2005-08-16 at 13:54 +0900, Hiro Yoshioka wrote: > Takahashi san, > > I appreciate your comments. > > > 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. > > My code does nothing do it. > > I need a volunteer to implement it.
it's actually not too hard; all you need is to use SSE and not MMX; and then just store sse register you're overwriting on the stack or so...
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