RE: why Does Kernel Module should not do Floating Point operation?

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On Wed, 2006-06-28 at 10:11 +0530, Manjunath_Naik wrote:
> Hi Arjan van de Ven
> 
> I had not understood the second paragraph.... "if you use it in the
> kernel you overwrite the userspace one... which is bad..."
> 
> What is the meaning of above? 

it means that if the kernel uses fpu state you run the risk of
clobbering the userspace one.


Please promise all of us that you're not going to do FPU work in the
kernel.... Please...

(there are many very subtle things why we can't do it, and will not
allow it in the kernel; and if this is for some evil binary module; your
customers will really love you for corrupting their 4 day simulation of
whatever atom level thing they're working on)



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