linux-kernel - Re: Please revert 21564fd2a3deb48200b595332f9ed4c9f311f2a7

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <469240EA.8000301@goop.org>
Date:	Mon, 09 Jul 2007 07:06:34 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Andi Kleen <ak@...e.de>, Adrian Bunk <bunk@...sta.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Christoph Hellwig <hch@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: Please revert 21564fd2a3deb48200b595332f9ed4c9f311f2a7

Alan Cox wrote:
> There were a considerable number of sensible logical objections. You just
> didn't agree with them. You've now effectively made .22 unsupportable
> since we don't know if someone has binary virtualiser crap loaded.

The pv_ops infrastructure doesn't support modular pv_ops 
implementations, and if it did, there's certainly no intention of 
supporting non-GPL implementations.

At the same time that all the other altinstruction patching happens, it 
converts any indirect calls via paravirt_ops into direct calls to the 
target function, bypassing struct paravirt_ops altogether.  After that 
the structure is pretty much only used for patching modules.  Any 
attempt at writing a modular pv_ops implementation would fail as a result.

    J
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/