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Date: Mon, 10 Jun 2013 13:08:47 +0200
From: Olivier Houchard <cognet@ci0.org>
To: Konstantin Belousov <kostikbel@gmail.com>
Subject: Re: svn commit: r251586 - head/sys/arm/ti
Message-ID: <20130610110847.GA46614@ci0.org>
References: <201306092251.r59MpCmW006162@svn.freebsd.org>
 <20130610035547.GX3047@kib.kiev.ua>
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On Mon, Jun 10, 2013 at 06:55:47AM +0300, Konstantin Belousov wrote:
> On Sun, Jun 09, 2013 at 10:51:12PM +0000, Olivier Houchard wrote:
> > Author: cognet
> > Date: Sun Jun  9 22:51:11 2013
> > New Revision: 251586
> > URL: http://svnweb.freebsd.org/changeset/base/251586
> > 
> > Log:
> >   Increase the maximum KVM available on TI chips. Not sure why we suddenly need
> >   that much, but that lets me boot with 1GB of RAM.
> 
> I suspect that the cause is the combination of limited KVA and
> lack of any limitation for the buffer map. I noted that ARM lacks
> VM_BCACHE_SIZE_MAX after a report from mav about similar (?) problem a
> day ago.
> 
> In essence, the buffer map is allowed to take up to ~330MB when no
> upper limit from VM_BCACHE_SIZE_MAX is specified.


Hi Konstantin,

Thanks for the hint !
It seems only i386 and sparc64 sets it, what would be a good value, 200M, as
it is on i386 ?

Regards,

Olivier