On Friday 05 February 2010 12:29:25 pm Bjorn Helgaas wrote: > On Friday 05 February 2010 12:08:47 pm Yinghai Lu wrote: > > On 02/05/2010 09:46 AM, Bjorn Helgaas wrote: > > > How many AMD boxes need amd_bus.c? I assume it's mostly or even only > > > those with multiple host bridges? Do you have any idea how many of > > > those shipped prior to 2010, and whether there are _CRS defects that > > > we're avoiding by using amd_bus.c? > > yes. > > > > Sun have 8 or more those kinds systems. and mostly have those problem. > > > > HP have simlair systems too. > > Were there bug reports from machines in the field, or is your claim > that there are problems based on your experience with prototype > machines? > > Frankly, I'm dubious that there are AMD machines in the field with > this sort of _CRS defect, because I don't think machines like that > could run Windows. Let me approach this from another angle. I'm thinking about turning on "pci=use_crs" for anything from 2008 or newer, instead of 2010, because it should fix bugs like this: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/341681 If we did that, would it break any AMD multi-host machines in the field? I think using 2008 would essentially disable amd_bus.c unless the user booted with "pci=nocrs" or we added blacklist entries. Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
