This patch fixes kernel panic issue while booting into the kdump kernel.

We have triggered crash and kdump vmcore was successful. No issues seen while
booting into the OS.
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>