RE: [Question] Why should we check irq_fpu_usable before accessing using ASENI instructions.

[justin mattock]

> Date: Fri, 18 Jul 2014 13:57:15 +0530
> Subject: [Question] Why should we check irq_fpu_usable before accessing using ASENI instructions.
> From: guru2018@xxxxxxxxx
> To: linux-x86_64@xxxxxxxxxxxxxxx
> 
> Hello,
> I am new to assembly language programming.
> In Kernel we check irq_fpu_usable before using any of AESNI related
> instruction.
> 1) why should we check the FPU is available for using AESNI instructions ?
> 2) Will AESNI intructions make use of FPU ?
> 
> I tried searching the answer in internet, no where i found the answer.
> Could please come one answer in this list.
> 
> Guru
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resending due to kernel(s) html bounces..

 

anyways hopefully somebody can see this post and answer your questions!
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