On Tue, Dec 20, 2016 at 04:48:56PM +1100, David Gibson wrote: > Here is the KVM implementation for the proposed PAPR extension which > allows the runtime resizing of a PAPR guest's Hashed Page Table (HPT). > > Using this requires a guest kernel with support for the extension. > Patches for guest side support in Linux were posted earlier: > https://lists.ozlabs.org/pipermail/linuxppc-dev/2016-December/152164.html > > It also requires userspace (i.e. qemu) to intercept the HPT resizing > hypercalls and invoke the KVM ioctl()s to implement them. This is > done instead of having KVM direclty intercept the hypercalls, so that > userspace can, if useful, impose additional restrictions on resizes: > for example it could refuse them entirely if policy for the VM > precludes resizing, or it could limit the size of HPT the guest can > request to meet resource limits. > > Patches to implement the userspace part of HPT resizing are proposed > for qemu-2.9, and can be found at: > https://github.com/dgibson/qemu/tree/hpt-resize > > I'm posting these now, in the hopes that both these and the > corresponding guest side patches can be staged and merged for the 4.11 > window. Thanks, series applied to my kvm-ppc-next branch. Next time, please cc kvm-ppc@xxxxxxxxxxxxxxx so I shows up in patchwork and I don't miss it. Paul.
