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Date: Thu, 21 Mar 2019 13:43:35 +0000 From: Luis Chamberlain <mcgrof@...nel.org> To: Andrea Arcangeli <aarcange@...hat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>, Peter Xu <peterx@...hat.com>, linux-kernel@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>, Hugh Dickins <hughd@...gle.com>, Maxime Coquelin <maxime.coquelin@...hat.com>, Maya Gokhale <gokhale2@...l.gov>, Jerome Glisse <jglisse@...hat.com>, Pavel Emelyanov <xemul@...tuozzo.com>, Johannes Weiner <hannes@...xchg.org>, Martin Cracauer <cracauer@...s.org>, Denis Plotnikov <dplotnikov@...tuozzo.com>, linux-mm@...ck.org, Marty McFadden <mcfadden8@...l.gov>, Mike Kravetz <mike.kravetz@...cle.com>, Mike Rapoport <rppt@...ux.vnet.ibm.com>, Kees Cook <keescook@...omium.org>, Mel Gorman <mgorman@...e.de>, "Kirill A . Shutemov" <kirill@...temov.name>, linux-api@...r.kernel.org, linux-fsdevel@...r.kernel.org Subject: Re: [PATCH v2 1/1] userfaultfd/sysctl: add vm.unprivileged_userfaultfd 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
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