Date: Fri, 20 Jun 2003 10:02:24 +0100 From: Doug Rabson <dfr@nlsystems.com> To: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>, Peter Wemm <peter@wemm.org> Cc: cvs-src@FreeBSD.org Subject: Re: cvs commit: src/sys/amd64/amd64 pmap.c Message-ID: <200306201002.24956.dfr@nlsystems.com> In-Reply-To: <ybs1xxpsj4n.wl@ett.sat.t.u-tokyo.ac.jp> References: <200306191214.h5JCEcjg028827@repoman.freebsd.org> <20030619190204.B74362A7EA@canning.wemm.org> <ybs1xxpsj4n.wl@ett.sat.t.u-tokyo.ac.jp>
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On Friday 20 June 2003 1:11 am, Hidetoshi Shimokawa wrote: > At Thu, 19 Jun 2003 12:02:04 -0700, > > Peter Wemm wrote: > > > Modified files: > > > sys/amd64/amd64 pmap.c > > > Log: > > > Fix direct map page table for 2GB+ physical memory. > > > > Thank you! :-) > > > > Cheers, > > -Peter > > Do you have any plan to increase KVA up to 512GB? > struct vm_page consumes 250MB space for 8GB memory. Is there a direct-mapped region on amd64? The vm_page arrays come out of the direct-mapped regions on alpha and ia64 (don't know about sparc64) and this makes a big difference to KVA usage and probably to TLB pressure too. -- Doug Rabson Mail: dfr@nlsystems.com Phone: +44 20 8348 6160
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