From mboxrd@z Thu Jan  1 00:00:00 1970
From: pbonzini@redhat.com (Paolo Bonzini)
Date: Mon, 24 Mar 2014 11:41:56 +0100
Subject: [RFC] ARM VM System Sepcification
In-Reply-To: <1395651814.4052.6.camel@dagon.hellion.org.uk>
References: <20140226183454.GA14639@cbox>	 <20140301152756.67A02C40238@trevor
 .secretlab.ca>	 <20140306085213.GU643@mal.justgohome.co.uk> <531843EE.
 8040102@redhat.com>	 <53185FB9.1040308@redhat.com>	 <20140306120449.GA29916@
 mal.justgohome.co.uk>	 <20140307122418.2F2C4C408EC@trevor.secretlab.ca>	 <
 20140322010206.GF25519@cbox>	
 <20140322122354.7644FC418C4@trevor.secretlab.ca>
 <1395651814.4052.6.camel@dagon.hellion.org.uk>
Message-ID: <53300BF4.2000309@redhat.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Il 24/03/2014 10:03, Ian Campbell ha scritto:
>> > That isn't actually my position. I absolutely think that VMs /should/
>> > implement persistent variables, but the variables are a property of a VM
>> > instance, not of the disk image. As far as this spec is concerned, I
>> > think portable disk images should operate under the assumption of an
>> > empty set of variables, and therefore follow the removable disk
>> > requirements in the UEFI spec.
> Just to be sure I understand. You position is:
>      1. A VM image downloaded from www.distro.org should neither contain
>         nor expect any persistent variables to be present.
>      2. After a VM image is instantiated into a specific VM instance and
>         booted then it is at liberty to set persistent variables (either
>         on first boot or as part of an upgrade) and the VM should ensure
>         that those variables a retained over reboot for that specific
>         instance.
>      3. If a VM does not preserve those variables then the instance
>         should have some sane functional fallback (implied by the
>         removable disk requirements from the UEFI spec).
>
> Is that right? I'm pretty sure you meant (1), reasonably sure you meant
> (2) and not at all sure you meant (3) ;-)

At least I do. :)

Paolo