> > The original code "int $2" can provide the needed CPU-hidden-NMI-masked > > when entering #NMI, but I doubt it about this change. > > How would "int $2" block NMIs? The hidden effect of this change (and I > should have reviewed better the effect on the NMI entry code) is that the > call will not use the IST anymore. My understanding is that int $2 does not block NMIs. So reentries might have been possible. -Andi
