Re: [PATCH v2] MIPS64: Support of at least 48 bits of SEGBITS

[Maciej W. Rozycki]

On Fri, 15 May 2015, Leonid Yegoshin wrote:

> > Many processors support larger VA space than is utilized by the kernel.
> >    A choice was made to reduce the size of the VA space in order to
> > reduce TLB handling overhead.
> >
> > If the true reason for the patch is to enable larger VA space, say that.
> >    But is it really required by those processors you mention?  I doubt it.
> 
> Well, I was not aware about many processors capability, I can't find this kind
> of note anywhere.

 The R10000 and friends all have a 44-bit virtual address space, so this 
is no news to Linux.  This is noted in <asm/processor.h> right above the 
change you made there.

  Maciej
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