linux-kernel - Re: [PATCH v6 00/13] RISCV: Add KVM_GET_REG

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Message-ID: <CAAhSdy0yug=J0nxnnPoLYL=0MiT0w6qgPYOcv0QwMRe+fsQn8Q@mail.gmail.com>
Date:   Mon, 7 Aug 2023 09:18:33 +0530
From:   Anup Patel <anup@...infault.org>
To:     maz@...nel.org, oliver.upton@...ux.dev
Cc:     xiaobo55x@...il.com, ajones@...tanamicro.com, seanjc@...gle.com,
        Paolo Bonzini <pbonzini@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        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>,
        Ricardo Koller <ricarkol@...gle.com>,
        Vishal Annapurve <vannapurve@...gle.com>,
        Like Xu <likexu@...cent.com>,
        Vipin Sharma <vipinsh@...gle.com>,
        David Matlack <dmatlack@...gle.com>,
        Colton Lewis <coltonlewis@...gle.com>, kvm@...r.kernel.org,
        Haibo Xu <haibo1.xu@...el.com>, 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: Re: [PATCH v6 00/13] RISCV: Add KVM_GET_REG_LIST API

Hi Marc, Hi Oliver,

On Tue, Jul 25, 2023 at 2:05 PM Haibo Xu <haibo1.xu@...el.com> wrote:
>
> 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 move finalize_vcpu back to run_test so that riscv can implement
> its specific operation.
> Patch 10 change to do the get/set operation only on present-blessed list.
> Patch 11 add the skip_set facilities so that riscv can skip set operation
> on some registers.
> Patch 12 enabled the KVM_GET_REG_LIST API in riscv.
> patch 13 added the corresponding kselftest for checking possible
> register regressions.
>
> The get-reg-list kvm selftest was ported from aarch64 and tested with
> Linux v6.5-rc3 on a Qemu riscv64 virt machine.
>
> ---
> Changed since v5:
>   * Rebase to v6.5-rc3
>   * Minor fix for Andrew's comments
>
> 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 (6):
>   KVM: arm64: selftests: Move reject_set check logic to a function
>   KVM: arm64: selftests: Move finalize_vcpu back to run_test
>   KVM: selftests: Only do get/set tests on present blessed list
>   KVM: selftests: Add skip_set facility to get_reg_list test
>   KVM: riscv: Add KVM_GET_REG_LIST API support
>   KVM: riscv: selftests: Add get-reg-list test

Are you okay for this series to go through the KVM RISC-V tree ?

Regards,
Anup

>
>  Documentation/virt/kvm/api.rst                |   2 +-
>  arch/riscv/kvm/vcpu.c                         | 375 +++++++++
>  tools/testing/selftests/kvm/Makefile          |  13 +-
>  .../selftests/kvm/aarch64/get-reg-list.c      | 554 ++-----------
>  tools/testing/selftests/kvm/get-reg-list.c    | 401 +++++++++
>  .../selftests/kvm/include/kvm_util_base.h     |  21 +
>  .../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        | 780 ++++++++++++++++++
>  10 files changed, 1670 insertions(+), 496 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
>