From 66dfaa28a1fbf86d9b2ceba77b3db6b268d8199e Mon Sep 17 00:00:00 2001
From: Flatcar Buildbot <buildbot@flatcar-linux.org>
Date: Mon, 4 Aug 2025 07:14:57 +0000
Subject: [PATCH] eclass/dist-kernel-utils: Sync with Gentoo

It's from Gentoo commit 42eddd2bb0c152f2247810e74d2a643358b7ad66.
---
 .../portage-stable/eclass/dist-kernel-utils.eclass         | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sdk_container/src/third_party/portage-stable/eclass/dist-kernel-utils.eclass b/sdk_container/src/third_party/portage-stable/eclass/dist-kernel-utils.eclass
index 49977c1879..975efd2d63 100644
--- a/sdk_container/src/third_party/portage-stable/eclass/dist-kernel-utils.eclass
+++ b/sdk_container/src/third_party/portage-stable/eclass/dist-kernel-utils.eclass
@@ -180,7 +180,14 @@ dist-kernel_reinstall_initramfs() {
 	local kernel_dir=${1:-${KV_DIR}}
 	local ver=${2:-${KV_FULL}}
 
+	# If this is set it will have an effect on the name of the output
+	# image. Set this variable to track this setting.
+	if grep -q "CONFIG_EFI_ZBOOT=y" "${kernel_dir}/.config"; then
+		KERNEL_EFI_ZBOOT=1
+	fi
+
 	local image_path=${kernel_dir}/$(dist-kernel_get_image_path)
+
 	if [[ ! -f ${image_path} ]]; then
 		eerror "Kernel install missing, image not found:"
 		eerror "  ${image_path}"