On Sun, 2009-06-28 at 09:24 +0200, Andi Kleen wrote: > > > > There are 2 real questions I have: > > > > 1. Why are these devices hidden? I understand some of the other icore7 > > cpus devices behave as I would expect. > > I suspect its because they should not be normally accessed; it's "internal" > functionality of the uncore. They don't provide any direct user visible devices. > > Why do you want to access them? I am working to detect ECC errors. In the past we have used EDAC to detect the errors. I have started with with folks in the EDAC space, they are looking at decoding MCE level errors filling in the EDAC sysfs space. Regardless of MCE or EDAC implementation I need access to the PCI space to decode the ECC memory errors. > > > > > 2. If the devices can not be made to be used as a normal pci device > > what is the best way to access them? > > What currently works is to boot with pci=noacpi,lastbus=255 > You need a recent kernel that has a off by one fixed that prevent > accessing bus 255 this way earlier. Yes this was mentioned to me. Thanks, Keith Mannthey LTC Real-Time -- 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
