linux-kernel - [PATCH v4 00/12] RISCV: Add KVM_GET_REG

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Date:   Fri, 23 Jun 2023 18:40:02 +0800
From:   Haibo Xu <haibo1.xu@...el.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     xiaobo55x@...il.com, haibo1.xu@...el.com, ajones@...tanamicro.com,
        maz@...nel.org, oliver.upton@...ux.dev, seanjc@...gle.com,
        Paolo Bonzini <pbonzini@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Anup Patel <anup@...infault.org>,
        Atish Patra <atishp@...shpatra.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Shuah Khan <shuah@...nel.org>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Zenghui Yu <yuzenghui@...wei.com>,
        David Matlack <dmatlack@...gle.com>,
        Ben Gardon <bgardon@...gle.com>,
        Ricardo Koller <ricarkol@...gle.com>,
        Vishal Annapurve <vannapurve@...gle.com>,
        Vipin Sharma <vipinsh@...gle.com>,
        Colton Lewis <coltonlewis@...gle.com>, kvm@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm-riscv@...ts.infradead.org, linux-riscv@...ts.infradead.org,
        linux-kselftest@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev
Subject: [PATCH v4 00/12] RISCV: Add KVM_GET_REG_LIST API

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 move reject_set check logic to a function so as to check for
different errno for different registers.
Patch 9 change to do the get/set operation only on present-blessed list.
Patch 10 enabled the KVM_GET_REG_LIST API in riscv.
patch 11-12 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-rc6 on a Qemu riscv64 virt machine.

---
Changed since v3:
  * Rebase to Linux 6.4-rc6
  * Address Andrew's suggestions and comments:
  *   Move reject_set check logic to a function 
  *   Only do get/set tests on present blessed list 
  *   Only enable ISA extension for the specified config
  *   For disable-not-allowed registers, move them to the filter-reg-list 

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 (5):
  KVM: arm64: selftests: Move reject_set check logic to a function
  KVM: selftests: Only do get/set tests on present blessed list
  KVM: riscv: Add KVM_GET_REG_LIST API support
  KVM: riscv: selftests: Add finalize_vcpu check in run_test
  KVM: riscv: selftests: Add get-reg-list test

 Documentation/virt/kvm/api.rst                |   2 +-
 arch/riscv/kvm/vcpu.c                         | 375 +++++++++
 tools/testing/selftests/kvm/Makefile          |  11 +-
 .../selftests/kvm/aarch64/get-reg-list.c      | 538 ++-----------
 tools/testing/selftests/kvm/get-reg-list.c    | 439 ++++++++++
 .../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        | 752 ++++++++++++++++++
 10 files changed, 1658 insertions(+), 495 deletions(-)
 create mode 100644 tools/testing/selftests/kvm/get-reg-list.c
 create mode 100644 tools/testing/selftests/kvm/riscv/get-reg-list.c

-- 
2.34.1