Re: ABI change for device drivers using future AVX instruction set

[Andi Kleen]

>>> We could change kernel_fpu_begin() not to disable
>>> preemption, but instead set a task flag.  When we get the "no device"
>>> fault, if the flag is set, save the fpu state into the kernel fpu save
>>> area     
>>
>> What kernel fpu save area do you mean?
>>   
> 
> A new one, of course.
> 

With that we would be eventually in the mess Agner talked about.

-Andi
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