linux-kernel - Re: [patch] paravirt: VDSO page is essential

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Date:	Mon, 5 Mar 2007 14:48:03 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Andi Kleen <ak@...e.de>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Roland McGrath <roland@...hat.com>,
	virtualization <virtualization@...ts.osdl.org>
Subject: Re: [patch] paravirt: VDSO page is essential


* Andi Kleen <ak@...e.de> wrote:

> > VDSO is only a problem if (1) the hypervisor wants to reserve the 
> > top virtual address space (CONFIG_PARAVIRT=y), and (2) the glibc is 
> > old and
> 
> It broke the boot even with native hardware, no hypervisor

yeah - i just sent the fix for that regression - by making 
CONFIG_COMPAT_VDSO usable again.

basically, we want to avoid all the compatibility mess that exists on 
the hypervisor side to enter the Linux kernel.

	Ingo
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