linux-kernel - Re: [PATCH 5.15 0/2] Fix kvm selftest build failures in linux-5.15.y

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Date:   Fri, 23 Dec 2022 17:45:44 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Tyler Hicks <code@...icks.com>, gregkh@...uxfoundation.org,
        stable@...r.kernel.org
Cc:     Shuah Khan <shuah@...nel.org>, kvm@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Gavin Shan <gshan@...hat.com>, Marc Zyngier <maz@...nel.org>,
        Karolina Drobnik <karolinadrobnik@...il.com>,
        Mike Rapoport <rppt@...nel.org>
Subject: Re: [PATCH 5.15 0/2] Fix kvm selftest build failures in linux-5.15.y

On 12/23/22 01:09, Tyler Hicks wrote:
> From: "Tyler Hicks" <code@...icks.com>
> 
> The backport of commit 05c2224d4b04 ("KVM: selftests: Fix number of
> pages for memory slot in memslot_modification_stress_test") broke the
> build of the KVM selftest memslot_modification_stress_test.c source file
> in two ways:
> 
> - Incorrectly assumed that max_t() was defined despite commit
>    5cf67a6051ea ("tools/include: Add _RET_IP_ and math definitions to
>    kernel.h") not being present
> - Incorrectly assumed that kvm_vm struct members could be directly
>    accessed despite b530eba14c70 ("KVM: selftests: Get rid of
>    kvm_util_internal.h") not being present
> 
> Backport the first commit, as it is simple enough. Work around the lack
> of the second commit by using the accessors to get to the kvm_vm struct
> members.
> 
> Note that the linux-6.0.y backport of commit 05c2224d4b04 ("KVM:
> selftests: Fix number of pages for memory slot in
> memslot_modification_stress_test") is fine because the two prerequisite
> commits, mentioned above, are both present in v6.0.
> 
> Tyler
> 
> Karolina Drobnik (1):
>    tools/include: Add _RET_IP_ and math definitions to kernel.h
> 
> Tyler Hicks (Microsoft) (1):
>    KVM: selftests: Fix build regression by using accessor function
> 
>   tools/include/linux/kernel.h                                | 6 ++++++
>   .../selftests/kvm/memslot_modification_stress_test.c        | 2 +-
>   2 files changed, 7 insertions(+), 1 deletion(-)
> 

Acked-by: Paolo Bonzini <pbonzini@...hat.com>