nouveau-next 5.1

[Dave Airlie]

On Mon, 18 Feb 2019 at 16:19, Ben Skeggs <skeggsb at gmail.com> wrote:
>
> Hey Dave,
>
> Various fixes/cleanups, along with initial support for SVM features
> utilising HMM address-space mirroring and device memory migration.
> There's a lot more work to do in these areas, both in terms of
> features and efficiency, but these can slowly trickle in later down
> the track.

a) nouveau_svmm_init calls nvif_vmm_init inside a BUG_ON - no don't
ever call BUG_ON
from a user facing ioctl, especially one that is available on render
nodes. WARN_ON maybe,
even then just return to userspace.

b) doesn't build without CONFIG_HMM or CONFIG_HMM_MIRROR or some combo of those,

I assume we'd like to keep it building without selecting HMM. So I'm
guessing some ifdeffing might be needed, and also
some APIs not advertised.

Dave.