[Qemu-devel] [QEMU-PPC] [PATCH 00/13] target/ppc: Implement KVM support under TCG

[Suraj Jitindar Singh]

This patch series adds the necessary parts so that a tcg guest is able to use
kvm facilities. That is a tcg guest can boot its own kvm guests.

The main requirements for this were a few registers and instructions as well as
some hcalls and the addition of partition scoped translation in the radix mmu
emulation.

This can be used to boot a kvm guest under a pseries tcg guest:
Use power9_v2.2 cpu and add -machine cap-nested-hv=on for the first guest.
Then inside that guest boot a kvm guest as normal.
This takes advantage of the new hcalls with qemu emulating them as a normal
hypervisor would on a real machine.

This can also be used to boot a kvm guest under a powernv tcg guest:
Use any power9 cpu type.
This takes advantage of the new hv register access added.
Note that for powernv there is no xive interrupt excalation for KVM which means
that while the guest will boot, it won't receive any interrupts.

Suraj Jitindar Singh (13):
  target/ppc: Implement the VTB for HV access
  target/ppc: Work [S]PURR implementation and add HV support
  target/ppc: Add SPR ASDR
  target/ppc: Add SPR TBU40
  target/ppc: Add privileged message send facilities
  target/ppc: Enforce that the root page directory size must be at least
    5
  target/ppc: Handle partition scoped radix tree translation
  target/ppc: Implement hcall H_SET_PARTITION_TABLE
  target/ppc: Implement hcall H_ENTER_NESTED
  target/ppc: Implement hcall H_TLB_INVALIDATE
  target/ppc: Implement hcall H_COPY_TOFROM_GUEST
  target/ppc: Introduce POWER9 DD2.2 cpu type
  target/ppc: Enable SPAPR_CAP_NESTED_KVM_HV under tcg

 hw/ppc/ppc.c                    |  46 ++++-
 hw/ppc/spapr_caps.c             |  22 ++-
 hw/ppc/spapr_cpu_core.c         |   1 +
 hw/ppc/spapr_hcall.c            | 409 +++++++++++++++++++++++++++++++++++++++
 include/hw/ppc/ppc.h            |   4 +-
 include/hw/ppc/spapr.h          |   7 +-
 linux-user/ppc/cpu_loop.c       |   5 +
 target/ppc/cpu-models.c         |   2 +
 target/ppc/cpu-models.h         |   1 +
 target/ppc/cpu.h                |  70 +++++++
 target/ppc/excp_helper.c        |  79 +++++++-
 target/ppc/helper.h             |   9 +
 target/ppc/misc_helper.c        |  46 +++++
 target/ppc/mmu-radix64.c        | 412 ++++++++++++++++++++++++++++------------
 target/ppc/mmu-radix64.h        |   4 +
 target/ppc/timebase_helper.c    |  20 ++
 target/ppc/translate.c          |  28 +++
 target/ppc/translate_init.inc.c | 107 +++++++++--
 18 files changed, 1115 insertions(+), 157 deletions(-)

-- 
2.13.6