linux-kernel - Re: [PATCH 1/2] mm: Export vm_committed

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: <20121009124755.ce1087b4.akpm@linux-foundation.org>
Date:	Tue, 9 Oct 2012 12:47:55 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	KY Srinivasan <kys@...rosoft.com>,
	"olaf@...fle.de" <olaf@...fle.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"andi@...stfloor.org" <andi@...stfloor.org>,
	"apw@...onical.com" <apw@...onical.com>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>
Subject: Re: [PATCH 1/2] mm: Export vm_committed_as

On Mon, 8 Oct 2012 06:35:39 -0700
Greg KH <gregkh@...uxfoundation.org> wrote:

> On Mon, Oct 08, 2012 at 03:35:50AM +0000, KY Srinivasan wrote:
> > 
> > 
> > > -----Original Message-----
> > > From: Greg KH [mailto:gregkh@...uxfoundation.org]
> > > Sent: Sunday, October 07, 2012 8:44 PM
> > > To: KY Srinivasan
> > > Cc: linux-kernel@...r.kernel.org; devel@...uxdriverproject.org; olaf@...fle.de;
> > > apw@...onical.com; akpm@...ux-foundation.org; andi@...stfloor.org
> > > Subject: Re: [PATCH 1/2] mm: Export vm_committed_as
> > > 
> > > On Sun, Oct 07, 2012 at 04:59:45PM -0700, K. Y. Srinivasan wrote:
> > > > The policy engine on the host expects the guest to report the
> > > > committed_as. Since this variable is not exported,
> > > > export this symbol.
> > > 
> > > Why are these symbols not needed by either Xen or KVM or vmware, which
> > > I think all support the same thing, right?
> > 
> > The basic balloon driver does not need this symbol since the basic balloon driver
> > is not automatically driven by the host. On the Windows host we have a policy engine that
> > drives the balloon driver based on both guest level memory pressure that the guest
> > reports as well as other system level metrics the host maintains. We need this symbol to
> > drive the policy engine on the host.
> 
> Ok, but you're going to have to get the -mm developers to agree that
> this is ok before I can accept it.

Well I guess it won't kill us.

I do wonder what relevance vm_committed_as has to processes which are
running within a memcg container?

--
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/