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Re: [Xen-devel] [PATCH 1/2] Fix util/grub.d/20_linux_xen.in: Add xen_boot command support for aarch64



Hi  Konrad,

Thanks for your feedback.

On 29 August 2017 at 02:40, Konrad Rzeszutek Wilk
<konrad.wilk@xxxxxxxxxx> wrote:
> Commit d33045ce7ffcb7c1e4a60c14d5ca64b36e3c5abe introduced
> the support for this, but it does not work under x86 (as it stops
> 20_linux_xen from running).
>
> The 20_linux_xen is run under a shell and any exits from within it:
>

For your example

> (For example on x86):
> + /usr/bin/grub2-file --is-arm64-efi /boot/xen-4.9.0.gz
> [root@tst063 grub]# echo $?
> 1

I guess that is right behavior, then
      xen_loader="multiboot"
       module_loader="module"

 /boot/xen-4.9.0.gz is a xen binary for x86, right?

>
> will result in 20_linux_xen exciting without continuing
> and also causing grub2-mkconfig to stop processing.

maybe we are using different shell?  are you using ash?

>
> As in:
>
> [root@tst063 ~]#
>
> And no more.
>
> This patch wraps the invocation of grub-file to be a in subshell
> and to process the return value in a conditional. That fixes
> the issue.
>
> RH-BZ 1486002: grub2-mkconfig does not work if xen.gz is installed.
> CC: Fu Wei <fu.wei@xxxxxxxxxx>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> ---
>  util/grub.d/20_linux_xen.in | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
> index c002fc9..083bcef 100644
> --- a/util/grub.d/20_linux_xen.in
> +++ b/util/grub.d/20_linux_xen.in
> @@ -206,13 +206,12 @@ while [ "x${xen_list}" != "x" ] ; do
>      if [ "x$is_top_level" != xtrue ]; then
>         echo "  submenu '$(gettext_printf "Xen hypervisor, version %s" 
> "${xen_version}" | grub_quote)' \$menuentry_id_option 
> 'xen-hypervisor-$xen_version-$boot_device_id' {"
>      fi
> -    $grub_file --is-arm64-efi $current_xen
> -    if [ $? -ne 0 ]; then
> -       xen_loader="multiboot"
> -       module_loader="module"
> -    else
> +    if ($grub_file --is-arm64-efi $current_xen); then
>         xen_loader="xen_hypervisor"
>         module_loader="xen_module"
> +    else
> +       xen_loader="multiboot"
> +       module_loader="module"
>      fi
>      while [ "x$list" != "x" ] ; do
>         linux=`version_find_latest $list`
> --
> 2.1.4
>



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat

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