Hey Linus, Please pull this tag: git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/for-linus-3.6-rc1-tag which has just one tiny fix - way back in v3.5 we added a mechanism to populate back pages that were released (they overlapped with MMIO regions), but neglected to reserve the proper amount of virtual space for extend_brk to work properly. Coincidentally some other commit aligned the _brk space to larger area so I didn't trigger this until it was run on a machine with more than 2GB of MMIO space. arch/x86/xen/p2m.c | 5 ----- 1 files changed, 0 insertions(+), 5 deletions(-) Konrad Rzeszutek Wilk (1): xen/p2m: Reserve 8MB of _brk space for P2M leafs when populating back.