> However, I would tend to agree: RIE should only be needed on 32-bit > since 64-bit started its life knowing about no-exec permissions.
NX was not in the original AMD K8 chips. Was only added some time later. > set_personality_64bit()'s (which is confusingly just an initializer > and not called during the personality() syscall) comment about this > makes no sense to me: > > /* TBD: overwrites user setup. Should have two bits. > But 64bit processes have always behaved this way, > so it's not too bad. The main problem is just that > 32bit childs are affected again. */ > current->personality &= ~READ_IMPLIES_EXEC; What does not make sense? -Andi
