Re: [PATCH kernel v4 3/4] vfio/spapr: Reference mm in tce_container

2016-11-08 Thread David Gibson
On Tue, Nov 08, 2016 at 03:25:19PM -0700, Alex Williamson wrote: > On Mon, 24 Oct 2016 17:53:09 +1100 > Alexey Kardashevskiy wrote: > > > In some situations the userspace memory context may live longer than > > the userspace process itself so if we need to do proper memory context > > cleanup, we

Re: [PATCH kernel v4 3/4] vfio/spapr: Reference mm in tce_container

2016-11-08 Thread Alex Williamson
On Mon, 24 Oct 2016 17:53:09 +1100 Alexey Kardashevskiy wrote: > In some situations the userspace memory context may live longer than > the userspace process itself so if we need to do proper memory context > cleanup, we better have tce_container take a reference to mm_struct and > use it later w

Re: [PATCH kernel v4 3/4] vfio/spapr: Reference mm in tce_container

2016-11-07 Thread David Gibson
On Mon, Oct 24, 2016 at 05:53:09PM +1100, Alexey Kardashevskiy wrote: > In some situations the userspace memory context may live longer than > the userspace process itself so if we need to do proper memory context > cleanup, we better have tce_container take a reference to mm_struct and > use it la

Re: [PATCH kernel v4 3/4] vfio/spapr: Reference mm in tce_container

2016-10-24 Thread Nicholas Piggin
On Mon, 24 Oct 2016 17:53:09 +1100 Alexey Kardashevskiy wrote: > In some situations the userspace memory context may live longer than > the userspace process itself so if we need to do proper memory context > cleanup, we better have tce_container take a reference to mm_struct and > use it later w