[PATCH 0/6] Add Hyper-v extended hypercall support in KVM

[Vipin Sharma <vipinsh@google.com>]

This patch series adds Hyper-V extended hypercall support. All
hypercalls will exit to userspace if CPUID.0x40000003.EBX BIT(20) is
set.

Patch 4 and 5 are prep patches, they move some code to hyperv.h later
used by newly introduced test hyperv_extended_hcalls in Patch 6.

RFC: https://lore.kernel.org/lkml/20221021185916.1494314-1-vipinsh@google.com/

Vipin Sharma (6):
  KVM: x86: hyper-v: Use common code for hypercall userspace exit
  KVM: x86: hyper-v: Add extended hypercall support in Hyper-v
  KVM: selftests: Test Hyper-V extended hypercall enablement
  KVM: selftests: Make Hyper-V guest OS ID common
  KVM: selftests: Move hypercall() to hyper.h
  KVM: selftests: Test Hyper-V extended hypercall exit to userspace

 arch/x86/kvm/hyperv.c                         | 43 +++++----
 tools/testing/selftests/kvm/.gitignore        |  1 +
 tools/testing/selftests/kvm/Makefile          |  1 +
 .../selftests/kvm/include/x86_64/hyperv.h     | 31 +++++++
 .../selftests/kvm/x86_64/hyperv_clock.c       |  2 +-
 .../kvm/x86_64/hyperv_extended_hcalls.c       | 90 +++++++++++++++++++
 .../selftests/kvm/x86_64/hyperv_features.c    | 32 +++----
 .../selftests/kvm/x86_64/hyperv_svm_test.c    |  2 +-
 8 files changed, 163 insertions(+), 39 deletions(-)
 create mode 100644 tools/testing/selftests/kvm/x86_64/hyperv_extended_hcalls.c

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2.38.1.273.g43a17bfeac-goog