On 01/08/2012 05:15 PM, Alexander Graf wrote: > On 08.01.2012, at 14:29, Avi Kivity wrote: > > > On 01/04/2012 03:10 AM, Alexander Graf wrote: > >> From: Paul Mackerras <pau...@samba.org> > >> > >> 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.
It's okay not to support some features for older cpus. Is the 970 even interesting from a virt perspective? -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
