linux-kernel - Re: PATCH: Fix VMI and COMPAT

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Date:	Sat, 10 Mar 2007 09:47:50 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Zachary Amsden <zach@...are.com>
Cc:	Linus Torvalds <torvalds@...l.org>, Andrew Morton <akpm@...l.org>,
	Andi Kleen <ak@...e.de>, Rusty Russell <rusty@...tcorp.com.au>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Chris Wright <chrisw@...s-sol.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Virtualization Mailing List <virtualization@...ts.osdl.org>
Subject: Re: PATCH: Fix VMI and COMPAT_VDSO for 2.6.21


* Zachary Amsden <zach@...are.com> wrote:

> Zachary Amsden wrote:
> >VMI is broken under COMPAT_VDSO, as Xen and other non hardware 
> >assisted hypervisors will be.  I have been working on a fix for this 
> >which works for older glibcs that panic when the new relocatable VDSO 
> >is used.  However, I believe at this time that the fix is going to be 
> >too radical to consider at this stage in the release of 2.6.21.  We 
> >don't expect this config option to be turned on by vendors for new 
> >distributions, so at this point we are willing to drop support for it 
> >when VMI is compiled in, and work on a patch for 2.6.22 which more 
> >fully addresses the problem.
> >
> >Please apply, thanks.

makes sense. We can do Jan's relocatable-COMPAT_VDSO thing in v2.6.22, 
but for v2.6.21 that's way too intrusive.

Acked-by: Ingo Molnar <mingo@...e.hu>

> I suppose it would be better if I attached the patch.

it certainly helps ;-)

	Ingo
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