Re: arch/arm/mm/init.o: in function `arm_memblock_init': init.c:(.init.text+0xc8): undefined reference to `phys_initrd_start'

[Mike Rapoport]

On Wed, Aug 31, 2022 at 02:26:36PM +0530, Naresh Kamboju wrote:
> The following arm builds failed on Linux next-20220831.
> 
> Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
> 
> Regressions found on arm:
>    - build-clang-14-allnoconfig
>    - build-gcc-11-tinyconfig
>    - build-clang-11-tinyconfig
>    - build-gcc-9-tinyconfig
>    - build-gcc-11-orion5x_defconfig
>    - build-gcc-10-allnoconfig
>    - build-clang-nightly-orion5x_defconfig
>    - build-gcc-8-orion5x_defconfig
>    - build-clang-11-allnoconfig
>    - build-gcc-8-tinyconfig
>    - build-clang-11-orion5x_defconfig
>    - build-clang-nightly-tinyconfig
>    - build-clang-13-allnoconfig
>    - build-gcc-9-allnoconfig
>    - build-clang-13-tinyconfig
>    - build-clang-14-orion5x_defconfig
>    - build-clang-13-orion5x_defconfig
>    - build-clang-14-tinyconfig
>    - build-gcc-8-allnoconfig
>    - build-gcc-9-orion5x_defconfig
>    - build-clang-12-tinyconfig
>    - build-clang-nightly-allnoconfig
>    - build-gcc-10-orion5x_defconfig
>    - build-clang-12-orion5x_defconfig
>    - build-gcc-10-tinyconfig
>    - build-clang-12-allnoconfig
>    - build-gcc-11-allnoconfig
>    
> Build error:
> ------------
> arm-linux-gnueabihf-ld: arch/arm/mm/init.o: in function `arm_memblock_init':
> init.c:(.init.text+0xc8): undefined reference to `phys_initrd_start'
> make[1]: *** [/builds/linux/Makefile:1250: vmlinux] Error 1

Looks like this is because of 
Fixes: b35b2736b43d ("ARM: 9230/1: Support initrd with address in boot alias region")
that uses phys_initrd_start regardless of CONFIG_BLK_DEV_INITRD
 
> Build log link:
> https://builds.tuxbuild.com/2E6pMzczzw7tLMxz7WFjaPgQ9Io/
> 
> Steps to reproduce:
> -------------------
> # To install tuxmake on your system globally:
> # sudo pip3 install -U tuxmake
> 
> tuxmake --runtime podman --target-arch arm --toolchain gcc-11 --kconfig
> tinyconfig
> 
> --
> Linaro LKFT
> https://lkft.linaro.org

-- 
Sincerely yours,
Mike.