On 23/10/2015 18:54, Kevin O'Connor wrote: >> > >> > Extra privileges compared to what? Legacy BIOS does not really put >> > anything privileged in SMRAM, while OVMF does and _hence_ relocates the >> > SMBASE of the AP. It would have been nice to get it right from the >> > beginning, but right now it's not worth forcing a lockstep QEMU-SeaBIOS >> > update. > We could add code to SeaBIOS now that protects against multiple SMI > handlers running, and then at some future date QEMU could be updated. > I'll defer to your judgment if that makes sense. > > BTW, how does OVMF handle SMIs on multiple processors? Does it setup > a unique SMBASE for each cpu, or does it inspect the apic id (or > something similar) in the smi handler to determine which cpu should > handle the event?
It does the former. Paolo
