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From:   Haibo Xu <xiaobo55x@gmail.com>
Date:   Wed, 9 Aug 2023 13:02:57 +0800
Message-ID: <CAJve8o=6ukbqc_8RvgRxpss2c=q8Ltzf=cNdJ2B85fhNSvNgMQ@mail.gmail.com>
Subject: Re: [PATCH v6 00/13] RISCV: Add KVM_GET_REG_LIST API
To:     Anup Patel <anup@brainfault.org>
Cc:     Marc Zyngier <maz@kernel.org>, oliver.upton@linux.dev,
        ajones@ventanamicro.com, seanjc@google.com,
        Paolo Bonzini <pbonzini@redhat.com>,
        Jonathan Corbet <corbet@lwn.net>,
        Atish Patra <atishp@atishpatra.org>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Shuah Khan <shuah@kernel.org>,
        James Morse <james.morse@arm.com>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        Zenghui Yu <yuzenghui@huawei.com>,
        Ricardo Koller <ricarkol@google.com>,
        Vishal Annapurve <vannapurve@google.com>,
        Like Xu <likexu@tencent.com>,
        Vipin Sharma <vipinsh@google.com>,
        David Matlack <dmatlack@google.com>,
        Colton Lewis <coltonlewis@google.com>, kvm@vger.kernel.org,
        Haibo Xu <haibo1.xu@intel.com>, linux-doc@vger.kernel.org,
        linux-kernel@vger.kernel.org, kvm-riscv@lists.infradead.org,
        linux-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev
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On Wed, Aug 9, 2023 at 11:48=E2=80=AFAM Anup Patel <anup@brainfault.org> wr=
ote:
>
> On Wed, Aug 9, 2023 at 8:56=E2=80=AFAM Haibo Xu <xiaobo55x@gmail.com> wro=
te:
> >
> > On Tue, Aug 8, 2023 at 7:12=E2=80=AFPM Marc Zyngier <maz@kernel.org> wr=
ote:
> > >
> > > On Mon, 07 Aug 2023 04:48:33 +0100,
> > > Anup Patel <anup@brainfault.org> wrote:
> > > >
> > > > Hi Marc, Hi Oliver,
> > > >
> > > > On Tue, Jul 25, 2023 at 2:05=E2=80=AFPM Haibo Xu <haibo1.xu@intel.c=
om> 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 platfor=
m
> > > > > 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 imp=
lement
> > > > > its specific operation.
> > > > > Patch 10 change to do the get/set operation only on present-bless=
ed list.
> > > > > Patch 11 add the skip_set facilities so that riscv can skip set o=
peration
> > > > > 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_print=
f
> > > > >   KVM: arm64: selftests: Drop SVE cap check in print_reg
> > > > >   KVM: arm64: selftests: Remove print_reg's dependency on vcpu_co=
nfig
> > > > >   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 functio=
n
> > > > >   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 ?
> > >
> > > Sure, seems fine from my point of view. But please put it on an
> > > immutable topic branch so that we can also merge it in the arm64 tree=
,
> > > should we need to resolve any conflicts.
> > >
> >
> > Hi Marc,
> >
> > Thanks for your review!
> >
> > Which topic branch do you prefer or suggest to use?
> > I can do a rebase on it and fix any potential conflicts.
>
> I will share a branch with a stable commit history.
> I have already resolved conflicts at my end.
>

Cool! Thanks for your help!

> Regards,
> Anup
>
> >
> > Regards,
> > Haibo
> >
> > > Thanks,
> > >
> > >         M.
> > >
> > > --
> > > Without deviation from the norm, progress is not possible.