linux-kernel - Re: [PATCH] x86: Fix 27-rc crash on vsmp due to paravirt during module load

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Message-ID: <20080923083145.GD23031@elte.hu>
Date:	Tue, 23 Sep 2008 10:31:45 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Ravikiran G Thirumalai <kiran@...lex86.org>
Cc:	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Glauber de Oliveira Costa <glommer@...il.com>
Subject: Re: [PATCH] x86: Fix 27-rc crash on vsmp due to paravirt during
	module load


* Ravikiran G Thirumalai <kiran@...lex86.org> wrote:

> 27-rc fails to boot up if configured to use modules.  Turns out 
> vsmp_patch was marked __init, and vsmp_patch being the pvops 'patch' 
> routine for vsmp, a call to vsmp_patch just turns out to execute a 
> code page with series of 0xcc (POISON_FREE_INITMEM -- int3).  Since 
> apply_paravirt can only be called during init/module load, make 
> vsmp_patch with "__init_or_module"

applied to tip/x86/urgent, thanks Ravikiran!

	Ingo
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