From: Chris Wright <chrisw@sous-sol.org>
To: Andrew Morton <akpm@osdl.org>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>,
greg@kroah.com, zach@vmware.com, linux-kernel@vger.kernel.org,
torvalds@osdl.org, hch@infradead.org, rusty@rustcorp.com.au,
jlo@vmware.com, xen-devel@lists.xensource.com,
simon@xensource.com, ian.pratt@xensource.com, jeremy@goop.org
Subject: Re: A proposal - binary
Date: Thu, 3 Aug 2006 22:40:02 -0700 [thread overview]
Message-ID: <20060804054002.GC11244@sequoia.sous-sol.org> (raw)
In-Reply-To: <20060803211850.3a01d0cc.akpm@osdl.org>
* Andrew Morton (akpm@osdl.org) wrote:
> I must confess that I still don't "get" paravirtops. AFACIT the VMI
> proposal, if it works, will make that whole layer simply go away. Which
> is attractive. If it works.
Paravirtops is simply a table of function which are populated by the
hypervisor specific code at start-of-day. Some care is taken to patch
up callsites which are performance sensitive. The main difference is
the API vs. ABI distinction. In paravirt ops case, the ABI is defined at
compile time from source. The VMI takes it one step further and fixes
the ABI. That last step is a big one.
There are two basic issues. 1) what is the interface between the kernel
and the glue to a hypervisor. 2) how does one call from the kernel into
the glue layer.
Getting bogged down in #2, the details of the calling convention, is a
distraction from the real issue, #1. We are trying to actually find an
API that is useful for multiple projects. Paravirt_ops gives the
flexibility to evolve the interface.
next prev parent reply other threads:[~2006-08-04 5:38 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-03 10:14 A proposal - binary Zachary Amsden
2006-08-03 11:16 ` Arjan van de Ven
2006-08-03 12:16 ` Antonio Vargas
2006-08-03 15:17 ` Rik van Riel
2006-08-03 16:05 ` Chris Wright
2006-08-03 17:57 ` Zachary Amsden
2006-08-03 18:29 ` Antonio Vargas
2006-08-03 18:47 ` Zachary Amsden
2006-08-03 18:08 ` Zachary Amsden
2006-08-03 19:03 ` Greg KH
2006-08-03 19:14 ` Zachary Amsden
2006-08-03 19:36 ` Greg KH
2006-08-03 19:56 ` Dave Jones
2006-08-03 19:59 ` Greg KH
2006-08-03 20:25 ` Options depending on STANDALONE Adrian Bunk
2006-08-03 20:28 ` Greg KH
2006-08-03 20:41 ` Dave Jones
2006-08-03 23:40 ` [v4l-dvb-maintainer] " Trent Piepho
2006-08-05 10:51 ` Adrian Bunk
2006-08-06 11:18 ` Oliver Endriss
2006-08-13 16:36 ` Adrian Bunk
2006-08-14 21:15 ` Trent Piepho
2006-08-27 21:45 ` Adrian Bunk
2006-08-03 19:48 ` A proposal - binary linux-os (Dick Johnson)
2006-08-04 6:13 ` Jan Engelhardt
2006-08-03 21:03 ` Alan Cox
2006-08-03 13:21 ` Alan Cox
2006-08-03 20:29 ` Willy Tarreau
2006-08-03 21:12 ` Alan Cox
2006-08-03 21:27 ` Zachary Amsden
2006-08-03 15:35 ` Rik van Riel
2006-08-03 18:36 ` Zachary Amsden
2006-08-05 10:45 ` Pavel Machek
2006-08-06 22:45 ` Zachary Amsden
2006-08-06 22:59 ` Greg KH
2006-08-08 0:12 ` Pavel Machek
2006-08-08 0:42 ` Zachary Amsden
2006-08-09 7:43 ` Pavel Machek
2006-08-03 19:06 ` Greg KH
2006-08-03 19:26 ` Zachary Amsden
2006-08-03 20:01 ` Greg KH
2006-08-03 21:41 ` Zachary Amsden
2006-08-03 22:33 ` Alan Cox
2006-08-03 22:30 ` Greg KH
2006-08-03 22:49 ` Zachary Amsden
2006-08-03 22:31 ` Zachary Amsden
2006-08-03 23:30 ` Alan Cox
2006-08-03 23:40 ` Zachary Amsden
2006-08-04 10:21 ` Alan Cox
2006-08-04 14:34 ` Theodore Tso
2006-08-05 0:06 ` Paul Mackerras
2006-08-04 8:56 ` Christoph Hellwig
2006-08-04 2:52 ` Jeremy Fitzhardinge
2006-08-04 4:18 ` Andrew Morton
2006-08-04 5:04 ` Rusty Russell
2006-08-04 5:53 ` Andrew Morton
2006-08-04 7:04 ` Rusty Russell
2006-08-04 7:21 ` Andrew Morton
2006-08-04 8:29 ` Rusty Russell
2006-08-04 16:57 ` David Lang
2006-08-04 18:38 ` Jeremy Fitzhardinge
2006-08-04 18:46 ` Antonio Vargas
2006-08-04 19:06 ` David Lang
2006-08-04 19:26 ` Arjan van de Ven
2006-08-04 19:45 ` David Lang
2006-08-04 20:11 ` Jeremy Fitzhardinge
2006-08-04 20:31 ` David Lang
2006-08-04 21:26 ` Jeremy Fitzhardinge
2006-08-04 21:40 ` Bill Rugolsky Jr.
2006-08-04 22:00 ` Arjan van de Ven
2006-08-04 22:45 ` David Lang
2006-08-04 19:45 ` Jeff Dike
2006-08-04 19:49 ` David Lang
2006-08-04 21:46 ` Jeff Dike
2006-08-04 22:40 ` David Lang
2006-08-04 5:40 ` Chris Wright [this message]
2006-08-04 6:28 ` Antonio Vargas
2006-08-04 7:01 ` Chris Wright
2006-08-04 7:19 ` Antonio Vargas
2006-08-04 7:37 ` Chris Wright
2006-08-04 18:34 ` Chris Wright
2006-08-04 20:41 ` Zachary Amsden
2006-08-04 20:52 ` Chris Wright
2006-08-04 21:26 ` Alan Cox
2006-08-05 1:14 ` James Bottomley
2006-08-05 5:37 ` Zachary Amsden
2006-08-05 10:42 ` Adrian Bunk
2006-08-05 11:50 ` Alan Cox
2006-08-04 22:01 ` Andi Kleen
2006-08-04 22:39 ` Zachary Amsden
2006-08-04 22:52 ` Andi Kleen
2006-08-04 22:43 ` David Lang
2006-08-05 10:47 ` Adrian Bunk
2006-08-05 11:57 ` Andi Kleen
2006-08-05 1:30 ` James Bottomley
2006-08-05 4:33 ` Zachary Amsden
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