linux-kernel - Re: [PATCH] [5/12] x86_64: Make patching more robust, fix paravirt issue

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Message-ID: <20070818001145.GT3672@sequoia.sous-sol.org>
Date:	Fri, 17 Aug 2007 17:11:45 -0700
From:	Chris Wright <chrisw@...s-sol.org>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Andi Kleen <ak@...e.de>, patches@...-64.org,
	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Chris Wright <chrisw@...s-sol.org>
Subject: Re: [PATCH] [5/12] x86_64: Make patching more robust, fix paravirt
	issue

* Jeremy Fitzhardinge (jeremy@...p.org) wrote:
> This patch breaks Xen booting.  I get infinite recursive faults during
> patching when this patch is present.  If I boot with
> "noreplace-paravirt" it works OK, and it works as expected if I back
> this patch out.  I haven't tracked down the exact failure mode; its a
> little hard to debug because it overwrites all kernel memory with
> recursive fault stackframes and then finally traps out to Xen when it
> hits the bottom of memory.
> 
> I think we should back this one out before .23.

I agree (second time this has broken during .23 devel).

thanks,
-chris
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