Date: Mon, 29 Nov 2004 13:53:22 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> 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: <20041129215322.GA26806@troutmask.apl.washington.edu> In-Reply-To: <41AB9795.7020805@jrv.org> References: <20041129211341.GA26548@troutmask.apl.washington.edu> <41AB9795.7020805@jrv.org>
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On Mon, Nov 29, 2004 at 03:41:41PM -0600, James R. Van Artsalen wrote: > 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. 8GB of RAM seems to work without a problem. > Are you using a bge NIC or USB, or any other driver that needs bounce > buffer, 1394? Which SCSI driver? The K8S Pro has 2 bge nics on the motherboard. I have the driver in the kernel, but neither nic is currently being used. USB is compiled into the kernel and is only used when I transfer files to a memory stick (ie., it's seldomly used). Two SCSI drives are attached to an Adaptec AIC7902 Ultra320 SCSI adapter that is also on the motherboard. > Is this 5.3 release? 5.2.1 worked for me. The bounce-buffer code in > amd64 has changed since then but I haven't been able to figure it out. 6.0-CURRENT from today's sources, but the problem goes back to at least August. You can find other posts by me about panics with >8GB or ram. -- Steve
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