CentOS 7 works fine:
Running transaction
Installing : kernel-3.18.25-18.el7.x86_64 1/1
/etc/sysconfig/network-scripts/ifcfg-xenbr0: line 17:
8.8.4.4: command not found
GRUB_CMDLINE_XEN_DEFAULT already set in /etc/default/grub, not touching
GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT already set in /etc/default/grub, not touching
Regenerating grub2 config
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.18.25-18.el7.x86_64
Found initrd image: /boot/initramfs-3.18.25-18.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.18.21-17.el7.x86_64
Found initrd image: /boot/initramfs-3.18.21-17.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.18.25-18.el7.x86_64
Found initrd image: /boot/initramfs-3.18.25-18.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.18.21-17.el7.x86_64
Found initrd image: /boot/initramfs-3.18.21-17.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.18.25-18.el7.x86_64
Found initrd image: /boot/initramfs-3.18.25-18.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.18.21-17.el7.x86_64
Found initrd image: /boot/initramfs-3.18.21-17.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.18.25-18.el7.x86_64
Found initrd image: /boot/initramfs-3.18.25-18.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.18.21-17.el7.x86_64
Found initrd image: /boot/initramfs-3.18.21-17.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.10.0-327.4.4.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-327.4.4.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.10.0-229.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-229.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-5d64f5b902f747cd8697961c92f8ca51
Found initrd image: /boot/initramfs-0-rescue-5d64f5b902f747cd8697961c92f8ca51.img
done
Setting Xen as the default
Verifying : kernel-3.18.25-18.el7.x86_64 1/1
Installed:
kernel.x86_64 0:3.18.25-18.el7
Complete!
[root@localhost ~]# uname -a
Linux localhost 3.18.25-18.el7.x86_64 #1 SMP Tue Jan 19 22:23:47 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux