ACK: [PATCH 1/4] [Zesty] powerpc/powernv: Require MMU_NOTIFIER to fix NPU build

[Seth Forshee]

On Fri, May 12, 2017 at 02:03:37PM -0300, Breno Leitao wrote:
> From: Alistair Popple <alistair at popple.id.au>
> 
> BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1690412
> 
> In the recent commit 1ab66d1fbada ("powerpc/powernv: Introduce address
> translation services for Nvlink2") the NPU code gained a dependency on MMU
> notifiers.
> 
> All our defconfigs have KVM enabled, which selects MMU_NOTIFIER, but if KVM is
> not enabled then the build breaks.
> 
> Fix it by always selecting MMU_NOTIFIER when we're building powernv.
> 
> Fixes: 1ab66d1fbada ("powerpc/powernv: Introduce address translation services for Nvlink2")
> Signed-off-by: Alistair Popple <alistair at popple.id.au>
> [mpe: Reword change log]
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
> 
> (cherry picked from commit abfe8026b505d66dad7a3e5ebe7235f12c29b67d)
> Signed-off-by: Breno Leitao <breno.leitao at gmail.com>

Clean cherry picks, very little risk of regressions outside of powerpc.
For all 4:

Acked-by: Seth Forshee <seth.forshee at canonical.com>