Re: fx_init schedule in atomic

[Avi Kivity <avi@qumranet.com>]

Andrea Arcangeli wrote:
> On Fri, May 02, 2008 at 12:28:32PM +0300, Avi Kivity wrote:
>   
>> Applied, thanks. Dynamic allocation for the fpu state was introduced in 
>> 2.6.26-rc, right?
>>     
>
> It seems very recent, hit mainline on 30 Apr.
>
> Also we may want to think if there's something cheaper than fx_save to
> trigger a math exception that doesn't alter the fpu state, I didn't
> think much about it given it's such a slow path that's probably not
> worth changing with something more complicated anyway. And bringing in
> a few l1 exclusive cachelines in the cpu should allow the second
> instruction to repeat faster than the first.
>   

Oh, it's hardly performance critical.  I think it is fine as is.

-- 
error compiling committee.c: too many arguments to function


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