Re: [Xen-devel] [PATCH 5/5] libxl: add libxl_vm_generation_id_set()

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2014-05-21 at 14:21 +0100, David Vrabel wrote:
> Add a function to allow a toolstack to set a domain's VM generation
> ID.
> 
> Although the specification requires that a ACPI Notify event is raised
> if the generation ID is changed, in practice this appears not to be
> necessary if the generation ID is changed while the Windows VM is
> suspended.

Er, ok, that sounds suspicious though, can it be relied on for Windows
2015? Is generating the event so difficult? (I thought we had a libxl
function to do it...)

> 
> +/*
> + * Set a HVM domain's VM Generation ID.
> + *
> + * Toolstacks should call this after building or restoring the domain,
> + * but before unpausing it.

This would suggest that libxl_domain_config is the right place for it
then, and it should be handled within the library. But I'll await
completion of the discussion in 0/5 before committing 100% to that...

> + *
> + * For further details, refer to the "Virtual Machine Generation ID"
> + * document from Microsoft.

You linked to this in 0/5 -- perhaps include that in wherever this
comment ends up too?

> + */



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