Date: Thu, 1 Mar 2001 16:36:04 +0000 (GMT) From: Doug Rabson <dfr@nlsystems.com> To: John Baldwin <jhb@FreeBSD.org> Cc: <ia64@FreeBSD.org> Subject: Re: Grrrr.. Message-ID: <Pine.BSF.4.33.0103011635230.42199-100000@herring.nlsystems.com> In-Reply-To: <Pine.BSF.4.33.0103011622410.42199-100000@herring.nlsystems.com>
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On Thu, 1 Mar 2001, Doug Rabson wrote: > On Tue, 27 Feb 2001, John Baldwin wrote: > > > > > On 27-Feb-01 Doug Rabson wrote: > > > I think it would be a good idea. Basically, we need to be able to cope > > > with the calls to pmap_map() which the VM system makes during > > > initialisation. I'm not sure exactly how many there are - perhaps we can > > > map them all using translation registers, which would be nice. > > > > That would be ideal, yes. :) I guess I'll read up some more on the VM stuff in > > the ia64 docco and see if I can make some sense of it. > > I remember now. I always intended to redo pmap_map() via the direct-mapped > segments. This saves kernel virtual address space (of which there is > plenty) but more importantly saves TLB entries and on ia64 VHTP entries. I > just hacked up this patch which isn't tested on anything but I think its > on the right lines. Beware of conflicts - Drew Gallatin is working in this > area. I just noticed that I forgot to delete the old version of pmap_map() in sys/alpha/alpha/pmap.c. You get the picture anyway. -- Doug Rabson Mail: dfr@nlsystems.com Phone: +44 20 8348 6160 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ia64" in the body of the message
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