On Di, 2015-04-21 at 17:08 +0200, Paolo Bonzini wrote: > > On 21/04/2015 17:04, Gerd Hoffmann wrote: > > Hmm. I think if we merge all the smm / smram / tseg patches in one go > > this should work. Without patches reading the ESMRAMC register returns > > zero. With the patches the three cache-disable bits are hardcoded to > > '1'. This should work for detecting tseg support. > > > > You also have to test for smm support. The current protocol for this is > > that seabios checks whenever smm is already initialized (see > > *_apmc_smm_setup() in seabios/src/fw/smm.c) and if so it skips smm > > initialization. Right now qemu sets the bit on reset when running on > > kvm, so seabios doesn't try to use smm. On tcg the bit is clear after > > reset and seabios actually uses smm mode. > > BTW, I plan to add "-machine smm=yes/no/auto". > > Gerd, are you going to implement SMI_EN locking as well?
Sure, can do that while being at it. cheers, Gerd
