[RFC PATCH v0 0/5] PPC: KVM: pseries: Asynchronous page fault

Hi,

This series adds asynchronous page fault support for pseries guests
and enables the support for the same in powerpc KVM. This is an
early RFC with details and multiple TODOs listed in patch descriptions.

This patch needs supporting enablement in QEMU too which will be
posted separately.

Bharata B Rao (5):
  powerpc: Define Expropriation interrupt bit to VPA byte offset 0xB9
  KVM: PPC: Add support for KVM_REQ_ESN_EXIT
  KVM: PPC: Book3S: Enable setting SRR1 flags for DSI
  KVM: PPC: BOOK3S HV: Async PF support
  pseries: Asynchronous page fault support

 Documentation/virt/kvm/api.rst            |  15 ++
 arch/powerpc/include/asm/async-pf.h       |  12 ++
 arch/powerpc/include/asm/hvcall.h         |   1 +
 arch/powerpc/include/asm/kvm_book3s_esn.h |  24 +++
 arch/powerpc/include/asm/kvm_host.h       |  22 +++
 arch/powerpc/include/asm/kvm_ppc.h        |   4 +-
 arch/powerpc/include/asm/lppaca.h         |  20 +-
 arch/powerpc/include/uapi/asm/kvm.h       |   6 +
 arch/powerpc/kvm/Kconfig                  |   2 +
 arch/powerpc/kvm/Makefile                 |   5 +-
 arch/powerpc/kvm/book3s.c                 |   6 +-
 arch/powerpc/kvm/book3s_64_mmu_radix.c    |   9 +-
 arch/powerpc/kvm/book3s_hv.c              |  37 +++-
 arch/powerpc/kvm/book3s_hv_esn.c          | 189 +++++++++++++++++++
 arch/powerpc/kvm/book3s_hv_nested.c       |   4 +-
 arch/powerpc/kvm/book3s_pr.c              |   4 +-
 arch/powerpc/mm/fault.c                   |   7 +-
 arch/powerpc/platforms/pseries/Makefile   |   2 +-
 arch/powerpc/platforms/pseries/async-pf.c | 219 ++++++++++++++++++++++
 drivers/cpuidle/cpuidle-pseries.c         |   4 +-
 include/uapi/linux/kvm.h                  |   2 +
 tools/include/uapi/linux/kvm.h            |   1 +
 22 files changed, 574 insertions(+), 21 deletions(-)
 create mode 100644 arch/powerpc/include/asm/async-pf.h
 create mode 100644 arch/powerpc/include/asm/kvm_book3s_esn.h
 create mode 100644 arch/powerpc/kvm/book3s_hv_esn.c
 create mode 100644 arch/powerpc/platforms/pseries/async-pf.c

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2.31.1