Date: Wed, 22 Aug 2001 00:48:08 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: Julian Elischer <julian@elischer.org> Cc: Peter Wemm <peter@wemm.org>, Leo Bicknell <bicknell@ufp.org>, Matt Dillon <dillon@earth.backplane.com>, hackers@FreeBSD.ORG, murray@FreeBSD.ORG, jkh@FreeBSD.ORG Subject: Re: Recommendation for minor KVM adjustments for the release Message-ID: <3B8363B8.9E733A63@mindspring.com> References: <Pine.BSF.4.21.0108211404040.43396-100000@InterJet.elischer.org>
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Julian Elischer wrote: > > Are you actually going ahead with the PAE support? > > > > Will this be a compile-time option, so that it can be > > turned off? > > > > I considered doing the same, about 4 months ago but it's not > > like I could use the additional memory for mbufs, sockets, or > > other useful kernel structures, so I bailed on completing it. > > If you have the correct hardware, it can be used for > mbufs, bufs, or normal user memeory.. That would be MIPS R4400, AMD "Sledgehammer", UltraSPARC64, or Itanium hardware? 8-). I don't see how the hardware you pick -- unless it's 64 bit hardware -- is going to make it usable as mbuf targets from userspace, unless you have a big change in mind for the uiomove code that you aren't telling us about, so that the copyin can be bounced properly... just having 64 bit PCI cards that can access the memory directly via DMA isn't enough, I think. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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