kernel panic with greater that 8 GB of memory
sgk at troutmask.apl.washington.edu
Mon Nov 29 13:53:22 PST 2004
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.
More information about the freebsd-amd64