Re: [RFC] [PATCH] cache pollution aware __copy_from_user_ll()

[Hirokazu Takahashi]

Hi,

> The following patch does not use MMX regsiters so that we don't have
> to worry about save/restore the FPU/MMX states.
> 
> What do you think?

I think __copy_user_zeroing_intel_nocache() should be followed by sfence
or mfence instruction to flush the data.


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