Comment # 2 on bug 955493 from boo35 boo35

With  the patch applied, 

    ls -al /boot/efi/EFI/opensuse
         (empty)

    grub2-mkconfig
        ...
        ### END /etc/grub.d/10_linux ###

        ### BEGIN /etc/grub.d/20_linux_xen ###
        Found hypervisor: /boot/xen-4.6.0_02-397.gz
        Found linux image: /boot/vmlinuz-4.3.0-4.g734b32c-xen
        Found initrd image: /boot/initrd-4.3.0-4.g734b32c-xen
        menuentry 'openSUSE Leap 42.1, with Xen hypervisor' --class opensuse
--class gnu-linux --class gnu --class os --class xen $menuentry_id_option
'xen-gnulinux-simple-4716053b-39da-4cc1-a7ce-72171b862357' {
                echo    'Loading Xen 4.6.0_02-397 with Linux
4.3.0-4.g734b32c-xen ...'
                chainloader  $cmdpath/xen-4.6.0_02-397.efi xen-4.6.0_02-397.efi
config.1
        }
        submenu 'Advanced options for openSUSE Leap 42.1 (with Xen hypervisor)'
$menuentry_id_option 'gnulinux-advanced-4716053b-39da-4cc1-a7ce-72171b862357' {
                submenu 'Xen hypervisor, version 4.6.0_02-397'
$menuentry_id_option
'xen-hypervisor-4.6.0_02-397-4716053b-39da-4cc1-a7ce-72171b862357' {
                        menuentry 'openSUSE Leap 42.1, with Xen 4.6.0_02-397
and Linux 4.3.0-4.g734b32c-xen' --class opensuse --class gnu-linux --class gnu
--class os --class xen $menuentry_id_option
'xen-gnulinux-4.3.0-4.g734b32c-xen-advanced-4716053b-39da-4cc1-a7ce-72171b862357'
{
                                echo    'Loading Xen 4.6.0_02-397 with Linux
4.3.0-4.g734b32c-xen ...'
                                chainloader  $cmdpath/xen-4.6.0_02-397.efi
xen-4.6.0_02-397.efi config.2
                        }
                        menuentry 'openSUSE Leap 42.1, with Xen 4.6.0_02-397
and Linux 4.3.0-4.g734b32c-xen (recovery mode)' --class opensuse --class
gnu-linux --class gnu --class os --class xen $menuentry_id_option
'xen-gnulinux-4.3.0-4.g734b32c-xen-recovery-4716053b-39da-4cc1-a7ce-72171b862357'
{
                                echo    'Loading Xen 4.6.0_02-397 with Linux
4.3.0-4.g734b32c-xen ...'
                                chainloader  $cmdpath/xen-4.6.0_02-397.efi
xen-4.6.0_02-397.efi failsafe.3
                        }
                }
        }

        ### END /etc/grub.d/20_linux_xen ###
        ...
        done

    ls -al /boot/efi/EFI/opensuse
        -rwxrwxr-x 1 root root  297 Nov 18 06:13 grub.xen-files*
        -rwxrwxr-x 1 root root  16M Nov 16 16:56 initrd-4.3.0-4.g734b32c-xen*
        -rwxrwxr-x 1 root root 5.1M Nov 15 03:48 vmlinuz-4.3.0-4.g734b32c-xen*
        -rwxrwxr-x 1 root root 2.6K Nov 18 06:13 xen-4.6.0_02-397.cfg*
        -rwxrwxr-x 1 root root 2.1M Nov 11 13:18 xen-4.6.0_02-397.efi*

No errors in the `mkinitrd` process ...

I'll convert my custom xen.cfg -> xen.efi, and configure grub.cfg defaults and
check boot with these gen'd files in a bit.