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Groups > linux.kernel > #1571175
| From | Paul Mackerras <paulus@ozlabs.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCHv2 00/11] KVM implementation of PAPR HPT resizing extension |
| Date | 2017-01-31 23:20 +0100 |
| Message-ID | <t5OWm-6cJ-21@gated-at.bofh.it> (permalink) |
| References | <sQlCV-1sf-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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@vger.kernel.org so I shows up in patchwork and I don't miss it. Paul.
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Re: [PATCHv2 00/11] KVM implementation of PAPR HPT resizing extension Paul Mackerras <paulus@ozlabs.org> - 2017-01-31 23:20 +0100
Re: [PATCHv2 00/11] KVM implementation of PAPR HPT resizing extension David Gibson <david@gibson.dropbear.id.au> - 2017-02-01 06:00 +0100
Re: [PATCHv2 00/11] KVM implementation of PAPR HPT resizing extension Paul Mackerras <paulus@ozlabs.org> - 2017-02-01 06:10 +0100
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