Nathan Lynch <nath...@linux.ibm.com> writes: > Michael Ellerman <m...@ellerman.id.au> writes: > >> Add firmware version details to the dump stack arch description, which >> is printed in case of an oops. >> >> Currently /hypervisor only exists on KVM, so if we don't find that >> look for something that suggests we're on phyp and if so that's >> probably a good guess. The actual content of the ibm,fw-net-version >> seems to be a full path so is too long to add to the description. > > My only reservation is that ibm,fw-net-version seems to be unspecified > and could disappear in future firmware versions.
Yeah good point. > /ibm,powervm-partition would be the best PAPR-specified property for > this purpose, but I don't see it on a P8/860 partition I checked, > unfortunately. I do see it on a P9. Presumably it's present in device > trees on PowerVM P9 systems and later, but it's probably too new to use > for this. I'll look for both, it's easy enough. > /ibm,lpar-capable "indicates that the platform is capable of supporting > logical partitioning and is only present on such systems." This one is > present on the P8. But conceivably qemu/KVM could provide that property, which would defeat the purpose here which is to differentiate which actual hypervisor we're under. >> eg: Hardware name: ... of:'IBM,FW860.42 (SV860_138)' hv:phyp > > Will this info get printed during boot as well? There are many times it > would have been useful to me when looking at logs from non-oopsed > kernels. No it's not. But you're right that would often be useful. I think we can print it at the end of probe_machine(). I'll send a v2. cheers
