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Date: Tue, 4 Aug 2015 13:38:47 -0700
From: David Daney <ddaney@caviumnetworks.com>
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To: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
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Subject: Re: MIPS: Make set_pte() SMP safe.
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On 08/04/2015 01:36 PM, Leonid Yegoshin wrote:
> David,
>
> Note: Excuse me for bothering you but if guard page logic doesn't work
> anymore then it can be scraped. It allows me to optimize some cache
> flushes in VMAP area - instead of flushing a full cache, just flush a
> range of pages.
>

I don't know what the purpose of guard pages is.  I thought it was to 
produce an OOPs message if you accessed just beyond the end of the vmap 
area.  If people are using them for some other reason, then I am not 
aware of it.

David.