bug#75205: guix package test failure on i686-linux (kexec-load-file test)

[boogs]

Forwarding my reply from this other relevant thread[1]:

> Hi,
> It looks like some people[1,2] including myself are running into an issue 
> where the `guix system reconfigure` command fails, presumably because 
> `KEXEC_FILE_DEBUG` is not supported in older kernel configurations. 
>
> The output of reconfiguring my system is the same as Simen's[2] ending in:
>
> ```
> To complete the upgrade, run 'herd restart SERVICE' to stop,
> upgrade, and restart each service that was not automatically restarted.
> Run 'herd status' to view the list of services on your system.
> WARNING: (guile-user): imported module (guix build utils) overrides core 
> binding `delete'
> guix system: error: kexec-load-file: Invalid argument
> ```
>
> My system runs a custom kernel configuration that I created via `make 
> menuconfig` in the kernel repo. I suspect the issue lies here:
>
> ```
> (define (kexec-loading-program os)
>   "Return a program that calls 'kexec_file_load' to allow rebooting into OS
> via 'kexec'."
>   (let ((root-device (file-system-device
>                       (operating-system-root-file-system os))))
>     (program-file
>      "kexec-load-system.scm"
>      (with-imported-modules '((guix build syscalls))
>        #~(begin
>            (use-modules (guix build syscalls))

>            (let ((kernel (open-fdes #$(operating-system-kernel-file os)
>                                     O_RDONLY))
>                  (initrd (open-fdes #$(operating-system-initrd-file os)
>                                     O_RDONLY)))
>              (kexec-load-file kernel initrd
>                               (string-join
>                                (list #$@(operating-system-kernel-arguments
>                                          os root-device)))
>                               KEXEC_FILE_DEBUG)))))))
> ```
>
> This is the relevant snippet from my kernel configuration: 
>
> ```
> #
> # Kexec and crash features
> #
> CONFIG_CRASH_CORE=y
> CONFIG_KEXEC_CORE=y
> CONFIG_KEXEC=y
> CONFIG_KEXEC_FILE=y
> CONFIG_KEXEC_JUMP=y
> CONFIG_CRASH_DUMP=y
> CONFIG_CRASH_HOTPLUG=y
> CONFIG_CRASH_MAX_MEMORY_RANGES=8192
> # end of Kexec and crash features
> # end of General setup
> ```
>
> [1] https://issues.guix.gnu.org/75320
> [2] https://issues.guix.gnu.org/75211

[1] https://issues.guix.gnu.org/75027


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