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Re: [Xen-devel] [PATCH v6 3/4] * util/grub.d/20_linux_xen.in: Add xen_boot command support



On Tue, Jul 26, 2016 at 05:13:42PM +0800, fu.wei@xxxxxxxxxx wrote:
> From: Fu Wei <fu.wei@xxxxxxxxxx>
>
> This patch adds the support of xen_boot command:
>     xen_hypervisor
>     xen_module
>
> Also add a new "feature_xen_boot" to indicate this grub support
> xen_boot command.
>
> Signed-off-by: Fu Wei <fu.wei@xxxxxxxxxx>
> ---
>  grub-core/normal/main.c     |  2 +-
>  util/grub.d/20_linux_xen.in | 13 ++++++++++---
>  2 files changed, 11 insertions(+), 4 deletions(-)
>
> diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c
> index 78a70a8..3402a05 100644
> --- a/grub-core/normal/main.c
> +++ b/grub-core/normal/main.c
> @@ -488,7 +488,7 @@ static const char *features[] = {
>    "feature_chainloader_bpb", "feature_ntldr", "feature_platform_search_hint",
>    "feature_default_font_path", "feature_all_video_module",
>    "feature_menuentry_id", "feature_menuentry_options", "feature_200_final",
> -  "feature_nativedisk_cmd", "feature_timeout_style"
> +  "feature_nativedisk_cmd", "feature_timeout_style", "feature_xen_boot"

I do not like it. This is not generic feature but ARM specific one.
Hence, we should not announce it as generic stuff. Then...

>  };
>
>  GRUB_MOD_INIT(normal)
> diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
> index c48af94..231e640 100644
> --- a/util/grub.d/20_linux_xen.in
> +++ b/util/grub.d/20_linux_xen.in
> @@ -122,16 +122,23 @@ linux_entry ()
>          else
>              xen_rm_opts="no-real-mode edd=off"
>          fi
> -     multiboot       ${rel_xen_dirname}/${xen_basename} placeholder 
> ${xen_args} \${xen_rm_opts}
> +        if [ "x\$feature_xen_boot" != xy ]; then

...we should consult $grub_platform and/or $grub_cpu here.

Daniel

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