On Mon, 09 Apr 2012 15:28:47 +0300 Avi Kivity <avi@xxxxxxxxxx> wrote: > Ah, so it's protecting two paths at the same time: rmap.write_protect -> > fast page fault, and lock(sptep) -> write protect. > > The whole thing needs to be documented very carefully in locking.txt, > otherwise mmu.c will be write-protected to everyone except you. Before changing mmu_lock usage, better describe it in locking.txt. I guess from mmu.c git history, it is already restricted to a few people who can describe that. Takuya -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html