Anthony Liguori wrote:
The real trick is doing it without the guest being involved at all.
Right now, it won't be a problem in KVM since the hypercall page only
differs by a single instruction across platforms. In the future,
we'll have to be smarter and wait for all VCPUs to leave the hypercall
page.
Well, you could just fake the whole acpi suspend/resume ;)
The tricky part for Xen in all this is how to make sure all mfn
references are visible to the hypervisor/toolstack so they can be
remapped; hypercall page contents are not a concern by comparison.
I don't know HVM save/resume all that well but I think it's a similar
model where the guest isn't involved.
Yes, the guest has little to nothing to do.
They may have a similar issue when using PV drivers.
Hm, not sure.
J
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