On Mon, 25 Jun 2007 17:57:20 -0400
Chris Snook [off-list ref] wrote:

Jay L. T. Cornwall wrote:

quoted

Chris Snook wrote:

quoted

What boards have we seen this on?  It's quite possible this is:

I can reproduce on an Asus P5K with a Core 2 Duo E6600.

lspci identifies the controller as:
  02:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit
  Ethernet Adapter (rev b0)

dmesg notes the PCI-DMA mapping implementation:
  PCI-DMA: Using software bounce buffering for IO (SWIOTLB)

I had a hunch this was on Intel.  I'd rather just disable this when
swiotlb is in use, unless we get more complaints.  It's probably
ultimately a BIOS quirk anyway.

So far we have reports from both camps:

Asus M2N8-VMX (AM2):	1 report of lockup
http://sourceforge.net/mailarchive/forum.php?thread_name=46780384.063603.26165%40m12-15.163.com&forum_name=atl1-devel

Asus P5K (LGA775):	2 reports of lockups
http://sourceforge.net/mailarchive/forum.php?thread_name=467E7E34.4010603%40gmail.com&forum_name=atl1-devel
http://lkml.org/lkml/2007/6/25/107

The common denominator in these reports is 4GB RAM.