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From: corbet@lwn.net (Jonathan Corbet)
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: netdev@vger.kernel.org,
	virtualization@lists.linux-foundation.org,
	Max Krasnyansky <maxk@qualcomm.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH RFC 1/5] vringfd syscall
Date: Mon, 07 Apr 2008 11:54:34 -0600	[thread overview]
Message-ID: <12555.1207590874@vena.lwn.net> (raw)
In-Reply-To: Your message of "Sat, 05 Apr 2008 22:02:08 +1000." <200804052202.09157.rusty@rustcorp.com.au>

Hey, Rusty,

> For virtualization, we've developed virtio_ring for efficient communication.
> This would also work well for userspace-kernel communication, particularly
> for things like the tun device.  By using the same ABI, we can join guests
> to the host kernel trivially.

I'm *sure* you meant to document that somewhat non-trivial proposed new
kernel API as soon as you got a moment.  But, since I went to the
trouble of reverse engineering it, I decided not to wait and to make a
little unreliable guide of my own.  For those who are curious about how
vringfd() is meant to work (or about how badly I misunderstood it), the
info is at:

	http://lwn.net/SubscriberLink/276856/8c927025c53ad7ce/

Hopefully it will be helpful,

jon

  parent reply	other threads:[~2008-04-07 17:54 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-05 12:02 [PATCH RFC 1/5] vringfd syscall Rusty Russell
2008-04-05 12:04 ` [PATCH RFC 2/5] vringfd base/offset Rusty Russell
2008-04-05 12:05   ` [PATCH RFC 3/5] tun: vringfd receive support Rusty Russell
2008-04-05 17:26     ` Anthony Liguori
2008-04-05 17:26     ` Anthony Liguori
2008-04-05 12:05   ` Rusty Russell
2008-04-05 12:06     ` [PATCH RFC 4/5] tun: vringfd xmit support Rusty Russell
2008-04-05 12:09       ` [PATCH RFC 5/5] lguest support Rusty Russell
2008-04-05 12:09       ` Rusty Russell
2008-04-07  5:13       ` [PATCH RFC 4/5] tun: vringfd xmit support Herbert Xu
2008-04-07  5:13       ` Herbert Xu
2008-04-07  7:24         ` Rusty Russell
2008-04-07  7:24         ` Rusty Russell
2008-04-07  7:35           ` David Miller
2008-04-08  1:51             ` Rusty Russell
2008-04-08  1:51             ` Rusty Russell
2008-04-07  7:35           ` David Miller
2008-04-05 12:06     ` Rusty Russell
2008-04-08 19:49     ` [PATCH RFC 3/5] tun: vringfd receive support Max Krasnyansky
2008-04-09 12:46       ` Dor Laor
2008-04-10 17:02         ` Max Krasnyanskiy
2008-04-10 17:02         ` Max Krasnyanskiy
2008-04-09 12:46       ` Dor Laor
2008-04-10  5:44       ` Rusty Russell
2008-04-10 17:18         ` Max Krasnyanskiy
2008-04-10 17:18         ` Max Krasnyanskiy
2008-04-10  5:44       ` Rusty Russell
2008-04-08 19:49     ` Max Krasnyansky
2008-04-05 12:44   ` [PATCH RFC 2/5] vringfd base/offset Avi Kivity
2008-04-06  2:54     ` Rusty Russell
2008-04-06  2:54     ` Rusty Russell
2008-04-05 12:44   ` Avi Kivity
2008-04-08  5:14   ` Arnd Bergmann
2008-04-08  5:14   ` Arnd Bergmann
2008-04-05 12:04 ` Rusty Russell
2008-04-05 17:18   ` Anthony Liguori
2008-04-05 17:18   ` Anthony Liguori
2008-04-06  3:23     ` Rusty Russell
2008-04-06  3:23     ` Rusty Russell
2008-04-07 17:54 ` Jonathan Corbet [this message]
2008-04-07 22:34   ` [PATCH RFC 1/5] vringfd syscall Rusty Russell
2008-04-07 22:34   ` Rusty Russell
2008-04-07 17:54 ` Jonathan Corbet
2008-04-08  2:35 ` Arnd Bergmann
2008-04-08  2:35   ` Arnd Bergmann
2008-04-08  2:35 ` Arnd Bergmann
2008-04-09 19:28 ` Jeremy Fitzhardinge
2008-04-09 19:28 ` Jeremy Fitzhardinge
2008-04-12 17:18 ` Marcelo Tosatti
2008-04-12 17:18 ` Marcelo Tosatti
2008-04-12 17:39   ` Marcelo Tosatti
2008-04-12 17:39   ` Marcelo Tosatti
2008-04-12 18:19   ` Rusty Russell
2008-04-12 18:19   ` Rusty Russell
  -- strict thread matches above, loose matches on Subject: below --
2008-04-05 12:02 Rusty Russell
2008-04-05 17:13 ` Anthony Liguori
2008-04-06  3:03   ` Rusty Russell
2008-04-06  3:03   ` Rusty Russell
2008-04-05 17:13 ` Anthony Liguori

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