Re: [PATCH v2 3/3] i387: support lazy restore of FPU state

[H. Peter Anvin]

On 02/20/2012 06:10 PM, Linus Torvalds wrote:
> On Mon, Feb 20, 2012 at 5:50 PM, Josh Boyer <jwboyer@xxxxxxxxx> wrote:
>>
>> I haven't tried really figuring this out yet, but building the Fedora kernel
>> on x86_64 with your latest tree results in:
>>
>> ERROR: "fpu_owner_task" [lib/raid6/raid6_pq.ko] undefined!
> 
> Ugh. My dislike of modules on my machines strikes again, and
> apparently nobody else tested the patches I sent out.
> 
> The attached trivial patch fixes it, I bet.
> 
> Although I do wonder if we should just make kernel_fpu_begin() be a
> real function instead of inlining it. I'm not sure it makes sense to
> inline that thing, and it might be better to export that one instead.
> Comments?
> 

I would agree with that.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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