[v3,00/10] RISCV: Add KVM_GET_REG_LIST API

Message

Xu, Haibo1 June 9, 2023, 2:12 a.m. UTC

KVM_GET_REG_LIST will dump all register IDs that are available to
KVM_GET/SET_ONE_REG and It's very useful to identify some platform
regression issue during VM migration.

Patch 1-7 re-structured the get-reg-list test in aarch64 to make some
of the code as common test framework that can be shared by riscv.

Patch 8 enabled the KVM_GET_REG_LIST API in riscv and patch 9-10 added
the corresponding kselftest for checking possible register regressions.

The get-reg-list kvm selftest was ported from aarch64 and tested with
Linux 6.4-rc5 on a Qemu riscv64 virt machine.

---
Changed since v2:
  * Rebase to Linux 6.4-rc5
  * Filter out ZICBO* config and ISA_EXT registers report if the
    extensions were not supported in host
  * Enable AIA CSR test
  * Move vCPU extension check_supported() to finalize_vcpu() per
    Andrew's suggestion
  * Switch to use KVM_REG_SIZE_ULONG for most registers' definition

---
Changed since v1:
   * rebase to Andrew's changes
   * fix coding style

Andrew Jones (7):
  KVM: arm64: selftests: Replace str_with_index with strdup_printf
  KVM: arm64: selftests: Drop SVE cap check in print_reg
  KVM: arm64: selftests: Remove print_reg's dependency on vcpu_config
  KVM: arm64: selftests: Rename vcpu_config and add to kvm_util.h
  KVM: arm64: selftests: Delete core_reg_fixup
  KVM: arm64: selftests: Split get-reg-list test code
  KVM: arm64: selftests: Finish generalizing get-reg-list

Haibo Xu (3):
  KVM: riscv: Add KVM_GET_REG_LIST API support
  KVM: riscv: selftests: Skip some registers set operation
  KVM: riscv: selftests: Add get-reg-list test

 Documentation/virt/kvm/api.rst                |   2 +-
 arch/riscv/kvm/vcpu.c                         | 378 +++++++++++
 tools/testing/selftests/kvm/Makefile          |  11 +-
 .../selftests/kvm/aarch64/get-reg-list.c      | 540 ++--------------
 tools/testing/selftests/kvm/get-reg-list.c    | 421 ++++++++++++
 .../selftests/kvm/include/kvm_util_base.h     |  16 +
 .../selftests/kvm/include/riscv/processor.h   |   3 +
 .../testing/selftests/kvm/include/test_util.h |   2 +
 tools/testing/selftests/kvm/lib/test_util.c   |  15 +
 .../selftests/kvm/riscv/get-reg-list.c        | 611 ++++++++++++++++++
 10 files changed, 1499 insertions(+), 500 deletions(-)
 create mode 100644 tools/testing/selftests/kvm/get-reg-list.c
 create mode 100644 tools/testing/selftests/kvm/riscv/get-reg-list.c