linux-kernel - Re: mmu notifier calls in apply_to_page

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] [day] [month] [year] [list]

Message-ID: <20100709183129.GG5741@random.random>
Date:	Fri, 9 Jul 2010 20:31:29 +0200
From:	Andrea Arcangeli <aarcange@...hat.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: mmu notifier calls in apply_to_page_range()

On Fri, Jul 09, 2010 at 10:41:51AM -0700, Jeremy Fitzhardinge wrote:
> On 07/09/2010 10:36 AM, Andrea Arcangeli wrote:
> > I'm not opposed to removing it, I've been wondering if it made any
> > sense in the first place but then there was no point not to add
> > it. Just calling apply_to_page_range in non blocking context doesn't
> > look so good.
> >   
> 
> That's a good point.  It should be safe if the pagetable is already
> fully populated; I should double-check that's true in our case.

Yes in that case is safe, but it'd be more strict to use pmd/*_offset
then.
--
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/