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    SubjectRe: [PATCH 5.4 000/244] 5.4.119-rc1 review
    On Wed, May 12, 2021 at 06:00:16PM +0100, Alexandru Elisei wrote:
    > Hi Naresh,
    >
    > Thank you for the report!
    >
    > On 5/12/21 5:47 PM, Naresh Kamboju wrote:
    > > On Wed, 12 May 2021 at 20:22, Greg Kroah-Hartman
    > > <gregkh@linuxfoundation.org> wrote:
    > >> This is the start of the stable review cycle for the 5.4.119 release.
    > >> There are 244 patches in this series, all will be posted as a response
    > >> to this one. If anyone has any issues with these being applied, please
    > >> let me know.
    > >>
    > >> Responses should be made by Fri, 14 May 2021 14:47:09 +0000.
    > >> Anything received after that time might be too late.
    > >>
    > >> The whole patch series can be found in one patch at:
    > >> https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.4.119-rc1.gz
    > >> or in the git tree and branch at:
    > >> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
    > >> and the diffstat can be found below.
    > >>
    > >> thanks,
    > >>
    > >> greg k-h
    > > Build regression detected.
    > >
    > >> Alexandru Elisei <alexandru.elisei@arm.com>
    > >> KVM: arm64: Initialize VCPU mdcr_el2 before loading it
    > > stable rc 5.4 arm axm55xx_defconfig builds failed due to these
    > > warnings / errors.
    > > - arm (axm55xx_defconfig) with gcc-8,9 and 10 failed
    > >
    > > arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_vcpu_first_run_init':
    > > arch/arm/kvm/../../../virt/kvm/arm/arm.c:582:2: error: implicit
    > > declaration of function 'kvm_arm_vcpu_init_debug'; did you mean
    > > 'kvm_arm_init_debug'? [-Werror=implicit-function-declaration]
    > > kvm_arm_vcpu_init_debug(vcpu);
    > > ^~~~~~~~~~~~~~~~~~~~~~~
    > > kvm_arm_init_debug
    > > cc1: some warnings being treated as errors
    >
    > This is my fault, in Linux v5.4 KVM for arm is still around, and there's no
    > prototype for the function when compiling for arm. I suspect that's also the case
    > for v4.19.
    >

    Correct.

    Guenter

    > I made this change to get it to build:
    >
    > $ git diff
    > diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
    > index dd03d5e01a94..32564b017ba0 100644
    > --- a/arch/arm/include/asm/kvm_host.h
    > +++ b/arch/arm/include/asm/kvm_host.h
    > @@ -335,6 +335,7 @@ static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu,
    > int cpu) {}
    >  static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
    >  
    >  static inline void kvm_arm_init_debug(void) {}
    > +static inline void kvm_arm_vcpu_init_debug(struct kvm_vcpu *vcpu) {}
    >  static inline void kvm_arm_setup_debug(struct kvm_vcpu *vcpu) {}
    >  static inline void kvm_arm_clear_debug(struct kvm_vcpu *vcpu) {}
    >  static inline void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu) {}
    >
    > which matches the stub for kvm_arm_init_debug(). I can spin a patch out of it and
    > send it for 5.4 and 4.19. Marc, what do you think?
    >
    > Thanks,
    >
    > Alex
    >
    > >
    > >
    > > steps to reproduce:
    > > --------------------
    > > #!/bin/sh
    > >
    > > # TuxMake is a command line tool and Python library that provides
    > > # portable and repeatable Linux kernel builds across a variety of
    > > # architectures, toolchains, kernel configurations, and make targets.
    > > #
    > > # TuxMake supports the concept of runtimes.
    > > # See https://docs.tuxmake.org/runtimes/, for that to work it requires
    > > # that you install podman or docker on your system.
    > > #
    > > # To install tuxmake on your system globally:
    > > # sudo pip3 install -U tuxmake
    > > #
    > > # See https://docs.tuxmake.org/ for complete documentation.
    > >
    > >
    > > tuxmake --runtime podman --target-arch arm --toolchain gcc-8 --kconfig
    > > axm55xx_defconfig
    > >
    > > ref:
    > > https://builds.tuxbuild.com/1sRT0HOyHnZ8N5ktJmaEcMIQZL0/
    > >
    > >
    > > --
    > > Linaro LKFT
    > > https://lkft.linaro.org

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