linux-kernel - Re: [PATCH 2/4, v2] x86: enlightenment for ticket spin locks

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:	Wed, 30 Jun 2010 16:57:35 +0100
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Jan Beulich <JBeulich@...ell.com>, "mingo@...e.hu" <mingo@...e.hu>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"hpa@...or.com" <hpa@...or.com>,
	ksrinivasan <ksrinivasan@...ell.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Stefano Stabellini <Stefano.Stabellini@...citrix.com>
Subject: Re: [PATCH 2/4, v2] x86: enlightenment for ticket spin locks - Xen
  implementation

On Wed, 30 Jun 2010, Jeremy Fitzhardinge wrote:
> On 06/29/2010 04:32 PM, Jan Beulich wrote:
> > Use the (alternative instructions based) callout hooks to the ticket
> > spinlock code to enlighten ticket locks when running fully virtualized
> > on Xen. Ultimately, this code might also be a candidate to be used
> > when running para-virtualized.
> >
> 
> I'm not sure what the gain is by making this independent of all the rest
> of the Xen support in the kernel.  Stefano is working on a series
> (posted a few times now) to add more paravirtual features for Xen HVM
> guests, and this work is conceptually very similar.

My series has been stable since a while now and contains all the basic
PV on HVM mechanisms you need, including parsing the cpuid and mapping
the shared info page.

Could you please rebase on my series (or at least the first two
patches), so that we don't conflict with each other?

Thanks,

Stefano
--
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/