Hi Nico, Sven, On Fri, Jun 11, 2021 at 9:19 AM Nico Huber <nic...@gmx.de> wrote: > > Hi Sven, > > On 11.06.21 00:55, Sven Semmler wrote: > > On my ThinkPad T430 running Coreboot-4.8.1 as part of an Heads install, > > I see these error messages when turning on the PC: > > > > mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank: 7: ee20000000 > > 3110a > > mce: [Hardware Error]: TSC 0 ADDR fefe78c0 MISC 3880000086 > > mce: [Hardware Error]: PROCESSOR 0:306a9 TIME 1622589409 SOCKET 0 > > mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank: 8: ee20000000 > > 3110a > > mce: [Hardware Error]: TSC 0 ADDR fefe7880 MISC 3880000086 > > mce: [Hardware Error]: PROCESSOR 0:306a9 TIME 1622589409 SOCKET 0 > > APIC 0 microcode 1f > > > > I do not think it is an issue with the actual RAM: > > Indeed, this is not about the actual (D)RAM. One can tell by the > address already, 0xfefe.... this is part of what we call I/O hole, > a region reserved from the memory address space for different purposes. > > More specifically, 0xfefe0000..0xfeffffff is a range used for cache- > as-ram (CAR) which is a mode where the processor cache is used as RAM > before the actual DRAM is available. > > I have seen these MCEs before, but never investigated. They might affect > the stability of coreboot, but it seems less likely that they affect the > running OS once the system succeeded to boot.
They look a lot like what https://review.coreboot.org/28443 fixed. You could check if commit dfaff4d18a711f764c9198f488435fdc553dcea2 exists on 4.8.1 (if it does not, there's your problem). Also, have you considered using a more recent coreboot version? 4.8.1 is over three years old, and the ThinkPad T430 is still supported on all newer releases (latest is 4.14). > Nico Best regards, Angel _______________________________________________ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
