Pass dis_ucode_ldr to kernel for recovery mode

In case of a botched microcode update, this allows people to
easily roll back.

It will of course break in the more unlikely event that you are
missing a microcode update in your firmware that is needed to boot
the system, but editing the entry to remove an option is easier than
having to figure out the option and add it.

LP: #1831789

Gbp-Pq: Name recovery-dis_ucode_ldr.patch

diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
index b3cddc31babd32096206f43516cc02af14d8d6ac..0cea76b2562926632c424531584958a2a7547954 100644 (file)
--- a/util/grub.d/10_linux.in
+++ b/util/grub.d/10_linux.in
@@ -228,6 +228,10 @@ case "$machine" in
     *) GENKERNEL_ARCH="$machine" ;;
 esac
 
+case "$GENKERNEL_ARCH" in
+  x86*) GRUB_CMDLINE_LINUX_RECOVERY="$GRUB_CMDLINE_LINUX_RECOVERY dis_ucode_ldr";;
+esac
+
 prepare_boot_cache=
 prepare_root_cache=
 boot_device_id=