linux-kernel - Re: [PATCH] emulate accessed bit for EPT

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:	Sun, 7 Feb 2010 17:21:01 -0200
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	Andrea Arcangeli <aarcange@...hat.com>
Cc:	Rik van Riel <riel@...hat.com>, balbir@...ux.vnet.ibm.com,
	jdike@...toit.com, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, avi@...hat.com
Subject: Re: [PATCH] emulate accessed bit for EPT

On Fri, Feb 05, 2010 at 07:14:13PM +0100, Andrea Arcangeli wrote:
> On Fri, Feb 05, 2010 at 03:34:23PM -0200, Marcelo Tosatti wrote:
> > But perhaps a module parameter to turn accessed bit emulation off might
> > be handy in the future?
> 
> Maybe, but somebody should show that this can overall become a
> downside, which I doubt... I think if it does, the VM is to blame for
> calling page_referenced when there is no point to do so just yet.

Agreed. ACK.

--
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/