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Date:      Tue, 23 Oct 2012 11:23:23 -0500
From:      Alan Cox <alc@rice.edu>
To:        Gleb Smirnoff <glebius@FreeBSD.org>
Cc:        svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org, src-committers@FreeBSD.org, Andre Oppermann <andre@FreeBSD.org>
Subject:   Re: svn commit: r241931 - in head/sys: conf kern
Message-ID:  <5086C47B.9080202@rice.edu>
In-Reply-To: <20121023160501.GB70741@FreeBSD.org>
References:  <201210231419.q9NEJjYH082863@svn.freebsd.org> <20121023144211.GX70741@FreeBSD.org> <5086B24C.9000606@freebsd.org> <20121023160501.GB70741@FreeBSD.org>

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On 10/23/2012 11:05, Gleb Smirnoff wrote:
> On Tue, Oct 23, 2012 at 05:05:48PM +0200, Andre Oppermann wrote:
> A>  There shouldn't be any users.  Zero copy send is broken and
> A>  responsible for random kernel crashes.  Zero copy receive isn't
> A>  supported by any modern driver.  Both are useless to dangerous.
> A>
> A>  The main problem with ZERO_COPY_SOCKETS was that it sounded great
> A>  and who wouldn't want to have zero copy sockets?  Unfortunately
> A>  it doesn't work that way.
>
> Okay, it appeared that there are users, even on current@ mailing
> list during couple of hours of exposition.

In my experience, that is because they are reporting a crash.

> Can we keep the old option as compatibility?
>
>




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