linux-kernel - Re: [PATCH] ld.so on FC7 is mmap'ing shared libraries right in over guest memory.

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Message-ID: <13426df10708100935s64bffb1i22238704651844fb@mail.gmail.com>
Date:	Fri, 10 Aug 2007 09:35:30 -0700
From:	"ron minnich" <rminnich@...il.com>
To:	"Arjan van de Ven" <arjan@...radead.org>
Cc:	"Rusty Russell" <rusty@...tcorp.com.au>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	lguest <lguest@...abs.org>,
	"lkml - Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ld.so on FC7 is mmap'ing shared libraries right in over guest memory.

On 8/9/07, Arjan van de Ven <arjan@...radead.org> wrote:
> On Thu, 2007-08-09 at 21:07 +1000, Rusty Russell wrote:
> > From: Ronald G. Minnich <rminnich@...il.com>
> >
> > [ FC7 maps shared libraries very low, where the launcher maps guest's
> > physical memory.  Quick fix is to link Launcher static, real fix is for
> > 2.6.24. ]
> >
> > -static is a simple fix. I expect this problem will be more common than we
> > like, as different distro's make different "improvements" to ld.so
>
>
> this description is incorrect; it's not an ld.so change that causes the
> low mapping.
>
> It's a command line option to the prelink program (which is in most
> distributions) that makes it use the entire address space, not just the
> higher bits....

oops. That'll teach me.

Thanks for the correction :-)

ron
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