Date: Fri, 28 Apr 2006 22:36:36 -0700 From: Nate Lawson <nate@root.org> To: Peter Jeremy <peterjeremy@optushome.com.au> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org, Peter Wemm <peter@wemm.org> Subject: Re: cvs commit: src/sys/i386/i386 pmap.c Message-ID: <4452FB64.7030308@root.org> In-Reply-To: <20060429024850.GB997@turion.vk2pj.dyndns.org> References: <200604281905.k3SJ59MZ008806@repoman.freebsd.org> <200604281422.35831.peter@wemm.org> <20060429024850.GB997@turion.vk2pj.dyndns.org>
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Peter Jeremy wrote: > On Fri, 2006-Apr-28 14:22:34 -0700, Peter Wemm wrote: >> On Friday 28 April 2006 12:05 pm, Peter Wemm wrote: >>> ups@ had a truely evil idea that I'll investigate. It should allow >>> freeing unused pages again by giving us a no-cost way to track the >>> holes in the kva block. >> FWIW, this idea appears to work. For the curious: >> http://people.freebsd.org/~peter/freepv.diff > > Care to explain how this works in slightly more detail than "truely evil". The PTE (page-table entry) is an appropriate size to store a pointer. So you link them all together in a freelist. -- Nate
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