linux-kernel - Re: [patch 134/149] x86, paravirt: Add a global synchronization point for pvclock

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: <4C4F1CE4.70605@zytor.com>
Date:	Tue, 27 Jul 2010 10:52:36 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Avi Kivity <avi@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	Peter Palfrader <peter@...frader.org>,
	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	stable@...nel.org, stable-review@...nel.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Glauber Costa <glommer@...hat.com>,
	Zachary Amsden <zamsden@...hat.com>,
	Marcelo Tosatti <mtosatti@...hat.com>
Subject: Re: [patch 134/149] x86, paravirt: Add a global synchronization point
 	for pvclock

On 07/27/2010 10:46 AM, Jeremy Fitzhardinge wrote:
>  On 07/13/2010 11:15 AM, Linus Torvalds wrote:
>> On Tue, Jul 13, 2010 at 11:04 AM, Avi Kivity<avi@...hat.com>  wrote:
>>> Well, current upstream uses "m":
>> Yes, I'd expect current 2.6.34 to also show the same problem.
>>
>>> and works; I also failed to reproduce with 2.6.32.16.  So I expect some
>>> toolchain involvement.
>> And yes, I do believe it's likely a newer gcc that triggers it too,
>> otherwise we'd have seen more reports of it.
> 
> Did anyone get around to doing a proper fix for this?   I don't see one
> in tip.git or linux-2.6.git.  And it needs to get back into stable...
> 

I'll go ahead and write it up.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

--
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/