On 2017-09-20 10:37, gaspar bin wang wrote: > On 20/09/2017, Jan Kiszka wrote: > >> But how do you map the PPR interface on Windows guests? Is there really >> a hook in the Windows kernel that can be used, or do we need MS to add >> that feature? > > For Windows guest, PPR should be adapted to the page-allocation interface, > but we haven't found the corresponding interface in windows, so we adapted to > windows based on ballooning driver. Yeah, that is likely an internal you will not easily get MS to open up - unless there is value with multiple hypervisors, maybe. > > In the driver, we allocate memory pages from the guest, set a mark and put into a pool. > The size of the pool is adjusted dynamically according to the actual memory usage of the guest. > > and the PPR for windows can be found here: > https://github.com/baibantech/kvm-guest-drivers-windows.git Thanks for sharing. Do you have numbers with such a Windows setup as well? Jan -- Siemens AG, Corporate Technology, CT RDA ITP SES-DE Corporate Competence Center Embedded Linux
