From mboxrd@z Thu Jan  1 00:00:00 1970
From: Luis Chamberlain <mcgrof@kernel.org>
Subject: Re: [PATCH v2 1/1] userfaultfd/sysctl: add
 vm.unprivileged_userfaultfd
Date: Thu, 21 Mar 2019 13:43:35 +0000
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To: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>, Andrew Morton <akpm@linux-foundation.org>, Peter Xu <peterx@redhat.com>, linux-kernel@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>, Hugh Dickins <hughd@google.com>, Maxime Coquelin <maxime.coquelin@redhat.com>, Maya Gokhale <gokhale2@llnl.gov>, Jerome Glisse <jglisse@redhat.com>, Pavel Emelyanov <xemul@virtuozzo.com>, Johannes Weiner <hannes@cmpxchg.org>, Martin Cracauer <cracauer@cons.org>, Denis Plotnikov <dplotnikov@virtuozzo.com>, linux-mm@kvack.org, Marty McFadden <mcfadden8@llnl.gov>, Mike Kravetz <mike.kravetz@oracle.com>, Mike Rapoport <rppt@linux.vnet.ibm.com>, Kees Cook <keescook@chromium.org>, Mel Gorman <mgorman@suse.de>, "Kirill A . Shutemov" <kirill@shutemov.name>, linux-ap
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On Wed, Mar 20, 2019 at 03:01:12PM -0400, Andrea Arcangeli wrote:
> but
> that would be better be achieved through SECCOMP and not globally.'.

That begs the question why not use seccomp for this? What if everyone
decided to add a knob for all syscalls to do the same? For the commit
log, why is it OK then to justify a knob for this syscall?

 Luis