[PATCH 4.4 55/69] x86/xen: fix upper bound of pmd loop in xen_cleanhighmap()

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Juergen Gross commit 1cf38741308c64d08553602b3374fb39224eeb5a upstream. xen_cleanhighmap() is operating on level2_kernel_pgt only. The upper bound of the loop setting

[PATCH 4.4 55/69] x86/xen: fix upper bound of pmd loop in xen_cleanhighmap()

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Juergen Gross commit 1cf38741308c64d08553602b3374fb39224eeb5a upstream. xen_cleanhighmap() is operating on level2_kernel_pgt only. The upper bound of the loop setting non-kernel-image entries