linux-kernel - Re: [PATCH 2/2] livepatch: x86: make kASLR logic more accurate

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Message-ID: <alpine.LNX.2.00.1504280126360.16113@pobox.suse.cz>
Date:	Tue, 28 Apr 2015 01:29:40 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Minfei Huang <minfei.huang@...mail.com>
cc:	x86@...nel.org, Borislav Petkov <bp@...en8.de>,
	Kees Cook <keescook@...omium.org>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Seth Jennings <sjenning@...hat.com>,
	Vojtech Pavlik <vojtech@...e.cz>, linux-kernel@...r.kernel.org,
	live-patching@...r.kernel.org
Subject: Re: [PATCH 2/2] livepatch: x86: make kASLR logic more accurate

On Mon, 27 Apr 2015, Minfei Huang wrote:

> Found that kaslr_enabled is only exist for x86. Maybe you can define a 
> weak function klp_adjustment_function_addr in general. Then each arch 
> can overwrite the function to implemente it specially.

It might start to make sense once there is at least one additional arch 
that supports kaslr. Currently, I don't see a benefit.

Why are you so obstinate about this? I personally don't find that 
important at all; it's something that can always be sorted out once more 
archs start supporting kaslr.

Thanks,

-- 
Jiri Kosina
SUSE Labs
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