linux-kernel - Re: PTE access rules & abstraction

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Thu, 25 Sep 2008 00:55:36 +0100 (BST)
From:	Hugh Dickins <hugh@...itas.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Linux Memory Management List <linux-mm@...ck.org>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Nick Piggin <npiggin@...e.de>,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: PTE access rules & abstraction

On Thu, 25 Sep 2008, Benjamin Herrenschmidt wrote:
> 
> Now, regarding the above bug, I'm afraid the only approaches I see that
> would work would be to have either a ptep_get_and_clear_flush(), which I
> suppose x86 virt. people will hate, or maybe to actually have a powerpc
> specific variant of the new start/commit hooks that does the flush.

Whyever not the latter?  Jeremy seems to have gifted that to you,
for precisely such a purpose.

Hugh

p.s. I surely agree with you over the name ptep_get_and_clear_full():
horrid, even more confusing than the tlb->fullmm from which it derives
its name.  I expect I'd agree with you over a lot more too, but please,
bugfixes first.
--
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/