Benjamin Herrenschmidt <b...@kernel.crashing.org> writes: > On Sun, 2013-08-25 at 19:32 +0100, Alexander Graf wrote: >> > + * At this point we are only interested in reading only bolted >> entries >> > + */ >> > + ghf.flags = KVM_GET_HTAB_BOLTED_ONLY; >> > + ghf.start_index = index; >> > + htab_fd = kvm_vm_ioctl(kvm_state, KVM_PPC_GET_HTAB_FD, &ghf); >> >> We should cache this. >> > Also why bolted only ?
because non bolted entries could be invalidated and reused by the time we look at the returned hpte values. I am not sure, whether it is ok or we need to make sure such a thing doesn't happen. For the use case i am looking at, ie, to dump the kernel address looking at bolted entries was enough. -aneesh
