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Date: Sun, 25 Jul 2010 11:48:07 +0530
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From: "Jayachandran C." <c.jayachandran@gmail.com>
To: Warner Losh <imp@freebsd.org>
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Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
	src-committers@freebsd.org, Alan Cox <alc@cs.rice.edu>
Subject: Re: svn commit: r210460 - head/sys/mips/include
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On Sun, Jul 25, 2010 at 10:18 AM, Alan Cox <alc@cs.rice.edu> wrote:
> Warner Losh wrote:
>>
>> Author: imp
>> Date: Sun Jul 25 04:19:05 2010
>> New Revision: 210460
>> URL: http://svn.freebsd.org/changeset/base/210460
>>
>> Log:
>> =A0Get N64 building by defining VM_FREELIST_DIRECT to be
>> =A0VM_FREELIST_DEFAULT. =A0I believe this is correct, since KX is set in
>> =A0n64, and thus all RAM can be direct mapped.

Thanks, this is something I missed in my MIPS page table changes.

>
> Yes, it is.

In MIPS 64bit, whole physical memory is direct mapped thru a XKPHYS
region. We can use vm_page_alloc() for pmap_alloc_pte_page() and
VM_WAIT for pmap_grow_pte_page_cache(), is this something we should
consider?

Thanks
JC.