These three patches aren''t really related to one another, but need to be applied in order. 1: gnttab: don''t use domain lock for serialization 2: gnttab: mark maptrack free list tail with an explicit terminator 3: gnttab: cleanup Signed-off-by: Jan Beulich <jbeulich@suse.com> Tested-by: Andrew Thomas <andrew.thomas@oracle.com>