On Wed, Feb 01, 2017 at 09:18:13AM +1100, Paul Mackerras wrote: > 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. Great. Where can I grab that tree? > Next time, please cc kvm-ppc@xxxxxxxxxxxxxxx so I shows up in > patchwork and I don't miss it. Sorry, I hadn't realized that list existed. Noted for future reference. -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson
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