Bug#880554: max grant frames problem again

[Jan Korbel]

Hello.

Same problem here. Everything is up-to-date stable, domU freezing after
mount and R/W on new 1,5TB device (btrfs).

dom0: 64b
domU: 32b OS + 64b kernel

No problem with gnttab_max_frames=256 yet.

Please include some fix in packages. Thanks.

J.