On 16.11.2011, at 23:50, Paul Mackerras wrote: > This series of patches updates the Book3S-HV KVM code that manages the > guest hashed page table (HPT) to enable several things: > > * MMIO emulation and MMIO pass-through > > * Use of small pages (4kB or 64kB, depending on config) to back the > guest memory > > * Pageable guest memory - i.e. backing pages can be removed from the > guest and reinstated on demand, using the MMU notifier mechanism. > > On PPC970 we have no way to get DSIs and ISIs to come to the > hypervisor, so we can't do MMIO emulation or pageable guest memory. > On POWER7 we set the VPM1 bit in the LPCR to make all DSIs and ISIs > come to the hypervisor (host) as HDSIs or HISIs. > > This series is RFC for the moment, although the first 5 or so patches > are pretty solid and could go in. I am going to rework the later > patches to use HPTEs with V=0 for the absent pages rather than key=31, > which will require handling the HPTE-not-present HDSIs we will get and > differentiating the case where the guest has created a HPTE but the > underlying page is not resident from the case where the guest has > created no HPTE for the address. This touches areas that I'm sure non-PPC people would want to see as well. Could you please CC kvm@vger too next time? Avi, Marcelo, mind to review some of the bits in this patch set? :) Alex -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
