grub2/0194-Use-grub-file-to-figure-out-whether-multiboot2-shoul.patch

From 87c089b6f1945ebcc690697d279c74284f1b4072 Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Mon, 28 Aug 2017 13:59:12 -0400
Subject: [PATCH 194/238] Use grub-file to figure out whether multiboot2 should
 be used for Xen.gz

The multiboot2 is much more preferable than multiboot. Especiall
if booting under EFI where multiboot does not have the functionality
to pass ImageHandler.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
 util/grub.d/20_linux_xen.in | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
index 9b1bd716965..fae1ffe9494 100644
--- a/util/grub.d/20_linux_xen.in
+++ b/util/grub.d/20_linux_xen.in
@@ -216,6 +216,10 @@ while [ "x${xen_list}" != "x" ] ; do
     else
 	xen_loader="multiboot"
 	module_loader="module"
+	if ($grub_file --is-x86-multiboot2 $current_xen); then
+		xen_loader="multiboot2"
+		module_loader="module2"
+	fi
     fi
     while [ "x$list" != "x" ] ; do
 	linux=`version_find_latest $list`
-- 
2.17.0