linux-kernel - Re: [PATCH -next 1/2] selftests: Fix vm_handle

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Date:   Mon, 16 Aug 2021 10:53:28 +0800
From:   chenlifu <chenlifu@...wei.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Shuah Khan <skhan@...uxfoundation.org>, <shuah@...nel.org>,
        <bgardon@...gle.com>, <wangyanan55@...wei.com>,
        <axelrasmussen@...gle.com>, <drjones@...hat.com>,
        <seanjc@...gle.com>, <vkuznets@...hat.com>, <dwmw@...zon.co.uk>,
        <joao.m.martins@...cle.com>, <yangyingliang@...wei.com>,
        <kvm@...r.kernel.org>, <linux-kselftest@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next 1/2] selftests: Fix vm_handle_exception undefined
 error

Thanks. Got it.

在 2021/8/14 7:26, Paolo Bonzini 写道:
> On 13/08/21 19:01, Shuah Khan wrote:
>> On 7/9/21 12:37 AM, Chen Lifu wrote:
>>> Compile setftests on x86_64 occurs following error:
>>> make -C tools/testing/selftests
>>> ...
>>>
>>> x86_64/hyperv_features.c:618:2: warning: implicit declaration of 
>>> function ‘vm_handle_exception’ [-Wimplicit-function-declaration]
>>>    618 |  vm_handle_exception(vm, GP_VECTOR, guest_gp_handler);
>>> /usr/bin/ld: /tmp/cclOnpml.o: in function `main':
>>> tools/testing/selftests/kvm/x86_64/hyperv_features.c:618: undefined 
>>> reference to `vm_handle_exception'
>>> collect2: error: ld returned 1 exit status
>>>
>>> The reason is that commit b78f4a596692 ("KVM: selftests: Rename 
>>> vm_handle_exception")
>>> renamed "vm_handle_exception" function to 
>>> "vm_install_exception_handler" function.
>>>
>>> Fix it by replacing "vm_handle_exception" with 
>>> "vm_install_exception_handler"
>>> in corresponding selftests files.
>>>
>>> Signed-off-by: Chen Lifu <chenlifu@...wei.com>
>>> ---
>>>   tools/testing/selftests/kvm/x86_64/hyperv_features.c | 2 +-
>>>   tools/testing/selftests/kvm/x86_64/mmu_role_test.c   | 2 +-
>>>   2 files changed, 2 insertions(+), 2 deletions(-)
>>>
>>
>>
>> Please include kvm in the commit summary. I think it is not getting
>> the right attention because of the summary line.
> 
> The same patch was already committed:
> 
>     commit f8f0edabcc09fafd695ed2adc0eb825104e35d5c
>     Author: Marc Zyngier <maz@...nel.org>
>     Date:   Thu Jul 1 08:19:28 2021 +0100
> 
>     KVM: selftests: x86: Address missing vm_install_exception_handler 
> conversions
>     Commit b78f4a59669 ("KVM: selftests: Rename vm_handle_exception")
>     raced with a couple of new x86 tests, missing two vm_handle_exception
>     to vm_install_exception_handler conversions.
>     Help the two broken tests to catch up with the new world.
>     Cc: Andrew Jones <drjones@...hat.com>
>     CC: Ricardo Koller <ricarkol@...gle.com>
>     Cc: Paolo Bonzini <pbonzini@...hat.com>
>     Signed-off-by: Marc Zyngier <maz@...nel.org>
>     Message-Id: <20210701071928.2971053-1-maz@...nel.org>
>     Reviewed-by: Andrew Jones <drjones@...hat.com>
>     Reviewed-by: Ricardo Koller <ricarkol@...gle.com>
>     Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
> 
> For the other patch, returning 0 is going to cause issues elsewhere
> in the tests.  Either the test is failed immediately, or all callers
> must be examined carefully.
> 
> Paolo
> 
> .