Re: [PATCH v8 00/23] userfaultfd-wp: Support shmem and hugetlbfs

[Peter Xu]

 On Tue, Apr 05, 2022 at 03:49:12PM -0700, Andrew Morton wrote:
> On Tue, 5 Apr 2022 18:42:43 -0400 Peter Xu <peterx@xxxxxxxxxx> wrote:
> 
> > On Tue, Apr 05, 2022 at 03:16:16PM -0700, Andrew Morton wrote:
> > > On Mon,  4 Apr 2022 21:46:23 -0400 Peter Xu <peterx@xxxxxxxxxx> wrote:
> > > 
> > > > This is v8 of the series to add shmem+hugetlbfs support for userfaultfd
> > > > write protection. 
> > > 
> > > Various compilation catastrophes with x86_64 allnoconfig.  I poked at
> > > the include ordering for a while but other things quickly became more
> > > attractive ;)
> > 
> > Sorry about that.  I still don't know what's the problem, but I'll give it
> > a shot soon.
> > 
> > I think I only tried out with the new configs but not all the rest configs.
> > I thought there're some bot looking after that one, from which I used to
> > receive build reports. And IIRC I fixed some build issues in early versions
> > from those reports.  Maybe I was wrong..
> > 
> > Any more hints on the latter?
> 
> `make allnoconfig'?
> 

Ah!  I thought when you mentioned "other things" you meant there're other
more severe issues... :)

For the allnoconfig, could you try with the attached quick fixup (upon
patch "mm/uffd: PTE_MARKER_UFFD_WP")?

That works for me on x86/arm, but I'm still trying out some other configs.

Thanks,

-- 
Peter Xu