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RE: [RFC] transcendent memory for Linux

From:  Dan Magenheimer <dan.magenheimer-AT-oracle.com>
To:  Pavel Machek <pavel-AT-ucw.cz>, Jeremy Fitzhardinge <jeremy-AT-goop.org>
Subject:  RE: [RFC] transcendent memory for Linux
Date:  Thu, 2 Jul 2009 07:03:46 -0700 (PDT)
Message-ID:  <87cb4d6e-dbfe-497b-b651-9b912dc3fbc8@default>
Cc:  linux-kernel-AT-vger.kernel.org, xen-devel-AT-lists.xensource.com, npiggin-AT-suse.de, chris.mason-AT-oracle.com, kurt.hackel-AT-oracle.com, dave.mccracken-AT-oracle.com, Avi Kivity <avi-AT-redhat.com>, Rik van Riel <riel-AT-redhat.com>, alan-AT-lxorguk.ukuu.org.uk, Rusty Russell <rusty-AT-rustcorp.com.au>, Martin Schwidefsky <schwidefsky-AT-de.ibm.com>, akpm-AT-osdl.org, Marcelo Tosatti <mtosatti-AT-redhat.com>, Balbir Singh <balbir-AT-linux.vnet.ibm.com>, tmem-devel-AT-oss.oracle.com, sunil.mushran-AT-oracle.com, linux-mm-AT-kvack.org, Himanshu Raj <rhim-AT-microsoft.com>, Keir Fraser <keir.fraser-AT-eu.citrix.com>
Archive-link:  Article

OK, OK, I give up.  I will ensure all code for shared pools
is removed from the next version of the patch.

Though for future reference, I am interested in what
problems it has other than "just" security (offlist
if you want).

> -----Original Message-----
> From: Pavel Machek [mailto:pavel@ucw.cz]
> 
> > > Yeah, a shared namespace of accessible objects is an entirely 
> > > new thing
> > > in the Xen universe.  I would also drop Xen support until 
> > > there's a good
> > > security story about how they can be used.
> > 
> > While I agree that the security is not bulletproof, I wonder
> > if this position might be a bit extreme.  Certainly, the NSA
> > should not turn on tmem in a cluster, but that doesn't mean that
> > nobody should be allowed to.  I really suspect that there are
> 
> This has more problems than "just" security, and yes, security should
> be really solved at design time...
> 								
> 			Pavel

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