linux-kernel - Re: [PATCH v2 0/7] KVM: LoongArch: selftests: Add timer test case

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Message-ID: <CAAhV-H6kU=6JtEoy3arisuo7RvVBHTn_g6TP7kGuz7AT2pRnQQ@mail.gmail.com>
Date: Sat, 15 Nov 2025 11:43:09 +0800
From: Huacai Chen <chenhuacai@...nel.org>
To: Bibo Mao <maobibo@...ngson.cn>, "open list:LOONGARCH" <loongarch@...ts.linux.dev>
Cc: Paolo Bonzini <pbonzini@...hat.com>, Sean Christopherson <seanjc@...gle.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/7] KVM: LoongArch: selftests: Add timer test case

Hi, Bibo,

I'm very confused with this series.
1. The cover letter doesn't appear in the maillist.
2. Patch-6 is missed in the thread.
3. The one-shot and periodic test splitting is a little strange,
because you put some common parts in the on-shot test, maybe you can
consider merge these two.

Huacai

On Tue, Nov 4, 2025 at 7:37 PM Bibo Mao <maobibo@...ngson.cn> wrote:
>
> This patchset adds timer test case for LoongArch system, it is based
> on common arch_timer test case. And it includes one-shot and period mode
> timer interrupt test, software emulated timer function and time counter
> test.
> ---
> v1 ... v2:
>   1. Restore PC and PRMD after exception handler.
>   2. Split patch 4 into two small patches with period timer test and
>      time counter test.
>   3. With time counter test, set time count with 0 when create VM. And
>      verify time count starts from 0 in guest code.
> ---
> Bibo Mao (7):
>   KVM: LoongArch: selftests: Add system registers save and restore on
>     exception
>   KVM: LoongArch: selftests: Add exception handler register interface
>   KVM: LoongArch: selftests: Add basic interfaces
>   KVM: LoongArch: selftests: Add timer test case with one-shot mode
>   KVM: LoongArch: selftests: Add period mode timer test
>   KVM: LoongArch: selftests: Add SW emulated timer test
>   KVM: LoongArch: selftests: Add time counter test
>
>  tools/testing/selftests/kvm/Makefile.kvm      |  10 +-
>  .../kvm/include/loongarch/arch_timer.h        |  84 ++++++++
>  .../kvm/include/loongarch/processor.h         |  81 +++++++-
>  .../selftests/kvm/lib/loongarch/exception.S   |   6 +
>  .../selftests/kvm/lib/loongarch/processor.c   |  47 ++++-
>  .../selftests/kvm/loongarch/arch_timer.c      | 195 ++++++++++++++++++
>  6 files changed, 417 insertions(+), 6 deletions(-)
>  create mode 100644 tools/testing/selftests/kvm/include/loongarch/arch_timer.h
>  create mode 100644 tools/testing/selftests/kvm/loongarch/arch_timer.c
>
>
> base-commit: ec0b62ccc986c06552c57f54116171cfd186ef92
> --
> 2.39.3
>