linux-kernel - Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu

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]

Message-ID: <51407E58.8020200@oracle.com>
Date:	Wed, 13 Mar 2013 09:25:44 -0400
From:	Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:	Josh Boyer <jwboyer@...hat.com>
CC:	"H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
	mingo@...hat.com, tglx@...utronix.de, konrad.wilk@...cle.com,
	rostedt@...dmis.org, gregkh@...uxfoundation.org,
	samu.kallio@...rdeencloud.com, kraman@...hat.com,
	xen-devel@...ts.xen.org, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running
 on bare metal

On 03/01/2013 07:14 AM, Josh Boyer wrote:
> On Thu, Feb 28, 2013 at 04:52:20PM -0800, H. Peter Anvin wrote:
>> On 02/28/2013 04:42 PM, Josh Boyer wrote:
>>> On Fri, Mar 01, 2013 at 01:36:29AM +0100, Borislav Petkov wrote:
>>>> On Thu, Feb 28, 2013 at 04:15:45PM -0800, H. Peter Anvin wrote:
>>>>>> I'll try to get someone to test this tomorrow.
>>>> Btw, you'd need to apply that other patch too
>>>>
>>>> http://marc.info/?l=xen-devel&m=136206183814547&w=2
>>>>
>>>> so that arch_flush_lazy_mmu_mode() has at least one caller on x86_64.
>>> Yeah, we already have that applied.  It stops crashes in xen
>>> environments so we pulled it in as a bugfix.  Thanks though!
>>>
>> Who are "we"?
> Sorry, Fedora.  That patch has a link to a bug in it.  We applied the
> patch for that bug.  I'll apply Boris' patch on top and get the same
> people to test it.

Josh, have you had a chance to test this?

-boris
--
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/