On Tue, May 7, 2013 at 10:20 PM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote: >> I'm not sure if reading /proc/mtrr actually reads the registers out of >> the CPU each time, or whether we just return the cached values we read >> out during initial boot-up. If the latter, then this output isn't >> really useful as there's no guarantee the values are still intact. > > Good point. From what I can tell, on Artem's system with "CPU0: > Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz," we would be using > generic_mtrr_ops, and generic_get_mtrr() appears to read from the > MSRs, so I think it should be useful. FWIW, that motherboard suffers from a PCI to PCIE bridge problem. It might have been fixed by bios upgrades by now but not sure. It might also suffer (depending on the revision) from the Sandy bridge SATA issue. So if affected, SATA controller is a ticking bomb. I have a P8H67-V motherboard but I haven't seen any suspend related issues. If this is totally unrelated I'm sorry for wasting your time. Just thought it might be good to know. Thanks Patrik Jakobsson -- 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
