On 08.01.2012, at 14:29, Avi Kivity wrote: > On 01/04/2012 03:10 AM, Alexander Graf wrote: >> From: Paul Mackerras <paulus@xxxxxxxxx> >> >> This adds the infrastructure to enable us to page out pages underneath >> a Book3S HV guest, on processors that support virtualized partition >> memory, that is, POWER7. Instead of pinning all the guest's pages, >> we now look in the host userspace Linux page tables to find the >> mapping for a given guest page. Then, if the userspace Linux PTE >> gets invalidated, kvm_unmap_hva() gets called for that address, and >> we replace all the guest HPTEs that refer to that page with absent >> HPTEs, i.e. ones with the valid bit clear and the HPTE_V_ABSENT bit >> set, which will cause an HDSI when the guest tries to access them. >> Finally, the page fault handler is extended to reinstantiate the >> guest HPTE when the guest tries to access a page which has been paged >> out. > > Yay! Half-yay, yes :). It does not work on 970, so we still have a target that doesn't support it. Alex -- 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
