On 20/11/2014 09:12, Gerd Hoffmann wrote: > Hi, > >> I don't know why RHEL7 SeaBIOS does not work on RHEL6. But note that >> it's a really old version (0.12). > > Hmm, works for me on a quick smoke test. Do you remember what exactly > broke and which version it was? Maybe the 1.7.2 -> 1.7.5 update fixed > it?
Possibly. I tested 1.7.2 about a month ago and it failed. > Or was it live-migration by chance? rhel6 qemu doesn't emulate pam > registers correctly, and seabios has a workaround for that. So > live-migrating between versions with and without correct pam emulation > creates some *ahem* very interesting corner cases ... No, it was not live migration. Laszlo found it when he was trying to identify a live migration bug as a QEMU bug or SeaBIOS bug; but he didn't even get to the point of doing live migration. :) Paolo
