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From: Ingo Molnar <mingo@elte.hu>
To: Jiri Kosina <jkosina@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Pavel Roskin <proski@gnu.org>, Zan Lynx <zlynx@acm.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Jon Masters <jcm@jonmasters.org>,
	Rusty Russell <rusty@rustcorp.com.au>,
	Greg Kroah-Hartman <gregkh@suse.de>
Subject: Re: [PATCH 2.6.25] module: allow ndiswrapper to use GPL-only symbols
Date: Wed, 5 Mar 2008 14:21:02 +0100	[thread overview]
Message-ID: <20080305132100.GB11701@elte.hu> (raw)
In-Reply-To: <Pine.LNX.4.64.0803050023090.18589@twin.jikos.cz>


* Jiri Kosina <jkosina@suse.cz> wrote:

> On Tue, 4 Mar 2008, Ingo Molnar wrote:
> 
> > > Ingo, i's simply not possible to put ndiswrapper in user-space sanely.
> > > Drivers are drivers. They'll want (shared) interrupts, they want DMA, 
> > > they want to do things like cli/sti.
> > yeah, i agree that putting it into userspace is quite insane.
> > it might possible to do it halfways sanely via existing arch/x86/kvm/ 
> > infrastructure though. VMX/SVM context will properly emulate the IRQ 
> > flag so cli/sti will work fine, and as long as DMA is properly 
> > quarantined via an iommu it might even not corrupt the rest of the 
> > system. 
> 
> This definitely could be a [hackish] way to go. The remarkable 
> drawback is that it will not work on CPUs without virtualization 
> extensions.

by the time it's implemented and trickles into distributions the 
majority of PCs will have virtualization extensions.

	Ingo

  reply	other threads:[~2008-03-05 13:21 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-28 22:11 Pavel Roskin
2008-02-28 23:25 ` Linus Torvalds
2008-02-29  6:20   ` Pavel Roskin
2008-02-29 16:08     ` Linus Torvalds
2008-02-29 16:54       ` Chris Friesen
2008-02-29 17:06         ` Linus Torvalds
2008-02-29 17:59           ` Chris Friesen
2008-03-06 14:56         ` David Woodhouse
2008-02-29 16:59       ` Zan Lynx
2008-02-29 17:07         ` Linus Torvalds
2008-02-29 17:20           ` Pavel Roskin
2008-02-29 17:33             ` Linus Torvalds
2008-02-29 19:39               ` Pavel Roskin
2008-02-29 19:53                 ` Linus Torvalds
2008-02-29 20:08                   ` Pavel Roskin
2008-02-29 20:28                     ` Linus Torvalds
2008-02-29 21:13                       ` Pavel Roskin
2008-02-29 20:17                 ` John W. Linville
2008-02-29 20:40                   ` David Newall
2008-02-29 20:59                     ` Pavel Roskin
2008-02-29 21:08                       ` David Newall
2008-02-29 22:17                         ` Pavel Roskin
2008-03-01  8:15                           ` David Newall
2008-02-29 20:44                   ` Pavel Roskin
2008-02-29 21:15                 ` Ingo Molnar
2008-02-29 22:31                   ` Pavel Roskin
2008-03-03 10:57                     ` Ingo Molnar
2008-03-04  5:37                       ` Pavel Roskin
2008-03-04 12:57                         ` Ingo Molnar
2008-03-04 17:19                           ` Linus Torvalds
2008-03-04 17:38                             ` Greg KH
2008-03-04 17:45                             ` Pavel Roskin
2008-03-04 21:20                               ` Ingo Molnar
2008-03-04 23:23                                 ` Pavel Roskin
2008-03-04 20:51                             ` Ingo Molnar
2008-03-04 23:25                               ` Jiri Kosina
2008-03-05 13:21                                 ` Ingo Molnar [this message]
2008-02-29 17:18         ` Jon Masters
2008-02-29 21:55           ` Adrian Bunk

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