linux-kernel - Re: [PATCH] x86: update vmlinux.lds.S to place .data section on a page boundary

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Message-ID: <20061001214756.GA27963@hmsreliant.homelinux.net>
Date:	Sun, 1 Oct 2006 17:47:56 -0400
From:	Neil Horman <nhorman@...driver.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Sam Ravnborg <sam@...nborg.org>, linux-kernel@...r.kernel.org,
	mj@...ey.karlin.mff.cuni.cz, davej@...hat.com
Subject: Re: [PATCH] x86: update vmlinux.lds.S to place .data section on a page boundary

On Fri, Sep 29, 2006 at 07:13:46PM -0600, Eric W. Biederman wrote:
> Neil Horman <nhorman@...driver.com> writes:
> 
> > Sorry, Replying to myself.  I forgot to mention in my last note why specifically
> > I was calling for this change, and why it was necessecary.  In addition to being
> > the standard in the script for executable sections, kexec also appears to rely
> > on PT_LOAD sections being on page boundaries.  With vmlinux.ld.s as it is, that
> > isn't the case, and so we can't load any kernels with kexec at the moment.  I've
> > seen this on the most recent fedora kernels (which have the latest version of
> > this linker script), and this patch corrects that.
> >
> > Please look at the file in its entirety, and if you still feel that modifying
> > the script so all the ALIGN(4096) directives to be ALIGN(PAGE_SIZE) instead is
> > the direction to go, I'll implement the change and test it out.
> 
> Is there a reason you don't want to kexec the bzImage?
> 
Not so much that I don't want to, but I don't think you should have to.  There
isn't any reason that we shouldn't be able to boot uncompressed kernels, is
there?
Regards
Neil

> Eric
> -
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