From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Tue, 29 Aug 2017 20:40:53 +0000 (-0400)
Subject: Use grub-file to figure out whether multiboot2 should be used for Xen.gz
X-Git-Url: https://iam.tj/gitweb/gitweb.cgi?p=grub.git;a=commitdiff_plain;h=b4d709b6ee789cdaf3fa7a80fd90c721a16f48c2

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>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---

diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
index 083bcef5d..0cb0f4e49 100644
--- a/util/grub.d/20_linux_xen.in
+++ b/util/grub.d/20_linux_xen.in
@@ -210,8 +210,13 @@ while [ "x${xen_list}" != "x" ] ; do
 	xen_loader="xen_hypervisor"
 	module_loader="xen_module"
     else
-	xen_loader="multiboot"
-	module_loader="module"
+	if ($grub_file --is-x86-multiboot2 $current_xen); then
+	    xen_loader="multiboot2"
+	    module_loader="module2"
+	else
+	    xen_loader="multiboot"
+	    module_loader="module"
+        fi
     fi
     while [ "x$list" != "x" ] ; do
 	linux=`version_find_latest $list`