Re: [PATCH v8 2/8] powerpc/vdso: Remove __kernel_datapage_offset and simplify __get_datapage()

[Christophe Leroy]

Le 23/10/2020 à 13:25, Will Deacon a écrit :
> On Fri, Oct 23, 2020 at 01:22:04PM +0200, Christophe Leroy wrote:
> > Hi Dmitry,
> >
> > Le 28/09/2020 à 17:08, Dmitry Safonov a écrit :
> > > On 9/27/20 8:43 AM, Christophe Leroy wrote:
> > > > Le 21/09/2020 à 13:26, Will Deacon a écrit :
> > > > > On Fri, Aug 28, 2020 at 12:14:28PM +1000, Michael Ellerman wrote:
> > > > > > Dmitry Safonov <0x7f454c46@xxxxxxxxx> writes:
> > > [..]
> > > > > > > I'll cook a patch for vm_special_mapping if you don't mind :-)
> > > > > >
> > > > > > That would be great, thanks!
> > > > >
> > > > > I lost track of this one. Is there a patch kicking around to resolve
> > > > > this,
> > > > > or is the segfault expected behaviour?
> > > >
> > > > IIUC dmitry said he will cook a patch. I have not seen any patch yet.
> > >
> > > Yes, sorry about the delay - I was a bit busy with xfrm patches.
> > >
> > > I'll send patches for .close() this week, working on them now.
> >
> > I haven't seen the patches, did you sent them out finally ?
>
> I think it's this series:
>
> https://lore.kernel.org/r/20201013013416.390574-1-dima@xxxxxxxxxx
>
> but they look really invasive to me, so I may cook a small hack for arm64
> in the meantine / for stable.

Not sure we are talking about the same thing.

I can't see any new .close function added to vm_special_mapping in order to replace arch_unmap() hook.

Christophe