linux-kernel - Re: [PATCH 1/1] x86: fix text

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Message-ID: <20080425151747.GA3265@one.firstfloor.org>
Date:	Fri, 25 Apr 2008 17:17:47 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Jiri Slaby <jirislaby@...il.com>,
	David Miller <davem@...emloft.net>, zdenek.kabelac@...il.com,
	rjw@...k.pl, paulmck@...ux.vnet.ibm.com, akpm@...ux-foundation.org,
	linux-ext4@...r.kernel.org, herbert@...dor.apana.org.au,
	penberg@...helsinki.fi, clameter@....com,
	linux-kernel@...r.kernel.org,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	Andi Kleen <andi@...stfloor.org>, pageexec@...email.hu,
	"H. Peter Anvin" <hpa@...or.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 1/1] x86: fix text_poke

> And we should really add a lot more sanity checking there.

A debug mode for virt_to_page(),__pa,__va et.al. would probably make sense
and would have caught it.

I used to have that partly in the x86-64 port with VIRTUAL_BUG_ON.

-Andi
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