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List:       netbsd-tech-kern
Subject:    Re: RFC: stop having a single global page size
From:       Matt Thomas <matt () 3am-software ! com>
Date:       2014-01-31 19:55:07
Message-ID: 82A51811-E814-4FC7-B06C-5BA5F9E034BF () 3am-software ! com
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On Jan 31, 2014, at 11:46 AM, Martin Husemann <martin@duskware.de> wrote:

> On Fri, Jan 31, 2014 at 03:03:21PM +0000, Justin Cormack wrote:
>> Linux maps the kernel with 4MB pages to save TLB entries too, I believe.
> 
> Yes, we do that too, but I guess wired kernel memory does not really
> count for Matt's proposal.

Correct.  The above is of a more dynamic nature.

> Sparc64 actually uses 4M, 64kb and 8kb pages for various wired kernel
> mappings.

I actually proposed a size to pmap_kenter so MD code could use larger
pages for wired kernel pages.
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