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Re: [PATCH] tools: Delete XEN_DOMCTL_disable_migrate



Andrew Cooper writes ("[PATCH] tools: Delete XEN_DOMCTL_disable_migrate"):
> It is conceptually wrong for this information to exist in the hypervisor in
> the first place.  Only the toolstack is capable of correctly reasoning about
> the non-migrateability of guests.
> 
> This hypercall has only ever existed to control the visibility of the
> Invariant TSC flag to the guest.  Now that we have properly disentanged that
> and moved ITSC into the guests CPUID policy, delete this hypercall.
> 
> Furthermore, this fixes a corner case where Xen would override the toolstacks
> choice of ITSC for a xenstore stubdomain.  That said, init-xenstore-domain
> doesn't currently ask for ITSC, and MiniOS doesn't know what ITSC is either,
> so nothing actually changes in practice.

For the tools parts,

Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>



 


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