Date: Tue, 30 Nov 2004 06:08:26 -0700 From: Scott Long <scottl@freebsd.org> To: "James R. Van Artsalen" <james@jrv.org> Cc: freebsd-amd64@freebsd.org Subject: Re: kernel panic with greater that 8 GB of memory Message-ID: <41AC70CA.4090805@freebsd.org>
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> I'm not convinced that the bounce-buffer scheme works on amd64 at all. > I don't think twe, ata or bge work (individually or in combination) > with more than 4GB of RAM. Bounce buffers with >4GB were indeed broken in 5.3-RELEASE. I fixed them about a week ago in 5-STABLE and 6-CURRENT. You can work around the breakage in 5.3-R by setting the following in /boot/loader.conf: vm.old_contigmalloc=1 Scott
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