Re: [Xen-devel] HVM Migration of domU on Qemu-upstream DM loses ACPI data in xenstore

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Tue, 2013-05-14 at 14:12 +0100, Diana Crisan wrote:
> Prior to issuing a migration the lines 'platform = ""', 'acpi = "1"',
> 'acpi_s3 = "1"' and 'acpi_s4 = "1"' are present in xenstore (despite
> the fact xl.conf does not explicitly specify them). However, after the
> migration succeeds on the receiving side, those lines are missing. 

Is the lack of these keys causing you a problem? IIRC they are used by
the builder to communicate with hvmloader (the pre-BIOS loader used in
HVM guests) so it can setup ACPI tables etc as appropriate. Nothing else
should be using them. They are documented as INTERNAL in
docs/misc/xenstore-paths.markdown.

Ian.



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