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Re: [PATCH 0/9] ppc: nested KVM HV for spapr virtual hypervisor

From: Cédric Le Goater
Subject: Re: [PATCH 0/9] ppc: nested KVM HV for spapr virtual hypervisor
Date: Tue, 15 Feb 2022 19:33:08 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0

On 2/15/22 04:16, Nicholas Piggin wrote:
Here is the rollup of patches in much better shape since the RFC.
I include the 2 first ones unchanged from independent submission
just to be clear that this series requires them.

Thanks Cedric and Fabiano for wading through my poor quality RFC
code, very good changes suggested and I hope I got most of them
and this one is easier to follow.

This is in good shape and functional. I will try to propose a small
buildroot environment for it, so that we don't have to start a full
distro to test.

I would like to talk about the naming. KVM-HV is I think "reserved"
to the PowerNV platform (baremetal). We also have KVM-PR which runs
KVM guests on various platforms, including pseries.

How can we call this yet another KVM PPC implementation ?




Nicholas Piggin (9):
   target/ppc: raise HV interrupts for partition table entry problems
   spapr: prevent hdec timer being set up under virtual hypervisor
   ppc: allow the hdecr timer to be created/destroyed
   target/ppc: add vhyp addressing mode helper for radix MMU
   target/ppc: make vhyp get_pate method take lpid and return success
   target/ppc: add helper for books vhyp hypercall handler
   target/ppc: Add powerpc_reset_excp_state helper
   target/ppc: Introduce a vhyp framework for nested HV support
   spapr: implement nested-hv capability for the virtual hypervisor

  hw/ppc/pegasos2.c        |   6 +
  hw/ppc/ppc.c             |  22 ++-
  hw/ppc/spapr.c           |  41 ++++-
  hw/ppc/spapr_caps.c      |  11 +-
  hw/ppc/spapr_cpu_core.c  |   6 +-
  hw/ppc/spapr_hcall.c     | 321 +++++++++++++++++++++++++++++++++++++++
  include/hw/ppc/ppc.h     |   3 +
  include/hw/ppc/spapr.h   |  74 ++++++++-
  target/ppc/cpu.h         |   8 +-
  target/ppc/excp_helper.c | 129 ++++++++++++----
  target/ppc/mmu-radix64.c |  41 ++++-
  11 files changed, 610 insertions(+), 52 deletions(-)

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