Re: [PATCH] ioctl_userfaultfd.2: update uffdio_api.features description

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On Wed, Jun 28, 2017 at 04:11:12PM +0200, Andrea Arcangeli wrote:
> On Wed, Jun 28, 2017 at 03:30:03PM +0300, Mike Rapoport wrote:
> 
> On a side note, as mentioned some time ago, if UFFDIO_API returns
> -EINVAL the uffdio_api userland structure gets clobbered with zeros by
> the kernel purely for robustness. So the "features" field is to be
> considered a meaningful output, only if UFFDIO_API ioctl succeeds and
> returns 0.

That reminded me that there was a bunch of comments from Andrea a while
ago [1]...

Michael, can you please review that thread?

If you need any help from my side, don't hesitate to ping me.
 
> Thanks,
> Andrea
> 

[1] https://lkml.org/lkml/2017/5/3/594

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