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Re: [Xen-devel] [PATCH v2 2/6] libxc/restore: Bail if unknown options are found

To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxx>
From: David Vrabel <david.vrabel@xxxxxxxxxx>
Date: Mon, 11 May 2015 11:43:46 +0100
Cc: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, Yang Hongyang <yanghy@xxxxxxxxxxxxxx>, Wei Liu <wei.liu2@xxxxxxxxxx>, Ian Campbell <Ian.Campbell@xxxxxxxxxx>, David Vrabel <david.vrabel@xxxxxxxxxx>
Delivery-date: Mon, 11 May 2015 10:43:57 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On 08/05/15 22:14, Andrew Cooper wrote:
> When restoring a domain, check for unknown options in Image Header.  Nothing
> good will come from attempting to continue.

Section 2.3 (Fields) explicitly states that "Padding and reserved fields
are set to zero on save and must be ignored during restore".

I don't think there is a compelling reason to change this behaviour for
this particular field.

David

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References:
- [Xen-devel] [PATCH v2 0/6] Misc patches to aid migration v2 Remus support
  - From: Andrew Cooper
- [Xen-devel] [PATCH v2 2/6] libxc/restore: Bail if unknown options are found
  - From: Andrew Cooper

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