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Date: Tue, 19 May 2015 14:38:01 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, qemu-devel@nongnu.org,
        kvm@vger.kernel.org, linux-api@vger.kernel.org,
        Pavel Emelyanov <xemul@parallels.com>,
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        Linus Torvalds <torvalds@linux-foundation.org>,
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        Dave Hansen <dave.hansen@intel.com>,
        Paolo Bonzini <pbonzini@redhat.com>, Rik van Riel <riel@redhat.com>,
        Mel Gorman <mgorman@suse.de>, Andy Lutomirski <luto@amacapital.net>,
        Hugh Dickins <hughd@google.com>, Peter Feiner <pfeiner@google.com>,
        "Dr. David Alan Gilbert" <dgilbert@redhat.com>,
        Johannes Weiner <hannes@cmpxchg.org>,
        "Huangpeng (Peter)" <peter.huangpeng@huawei.com>
Subject: Re: [PATCH 00/23] userfaultfd v4
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On Thu, 14 May 2015 19:30:57 +0200 Andrea Arcangeli <aarcange@redhat.com> wrote:

> This is the latest userfaultfd patchset against mm-v4.1-rc3
> 2015-05-14-10:04.

It would be useful to have some userfaultfd testcases in
tools/testing/selftests/.  Partly as an aid to arch maintainers when
enabling this.  And also as a standalone thing to give people a
practical way of exercising this interface.

What are your thoughts on enabling userfaultfd for other architectures,
btw?  Are there good use cases, are people working on it, etc?


Also, I assume a manpage is in the works?  Sooner rather than later
would be good - Michael's review of proposed kernel interfaces has
often been valuable.

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