grub2/0185-Don-t-update-the-cmdline-when-generating-legacy-menu.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <javierm@redhat.com>
Date: Thu, 17 Jun 2021 14:31:42 +0200
Subject: [PATCH] Don't update the cmdline when generating legacy menuentry
 commands

On OPAL ppc64le machines with an old petitboot version that doesn't have
support to parse BLS snippets, the grub2-mkconfig script is executed to
generate menuentry commands from the BLS snippets.

In this case, the script is executed with the --no-grubenv-update option
that indicates that no side effects should happen when running the script.

But the options field in the BLS snippets are updated regardless, only do
the update if --no-grubenv-update was not used.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
---
 util/grub.d/10_linux.in | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
index c02c1f0820..6af84b44e1 100644
--- a/util/grub.d/10_linux.in
+++ b/util/grub.d/10_linux.in
@@ -256,7 +256,9 @@ if [ -z "\${kernelopts}" ]; then
 fi
 EOF
 
-  update_bls_cmdline
+  if [ "x${GRUB_GRUBENV_UPDATE}" = "xyes" ]; then
+      update_bls_cmdline
+  fi
 
   if [ "x${BLS_POPULATE_MENU}" = "xtrue" ]; then
       populate_menu