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Re: [Xen-devel] [RFC Patch v2 01/16] xen: introduce new hypercall to reset vcpu


At 16:35 +0800 on 11 Jul (1373560533), Wen Congyang wrote:
> In colo mode, SVM is running, and it will create pagetable, use gdt...
> When we do a new checkpoint, we may need to rollback all this operations.
> This new hypercall will do this.

Can you do what you need with XEN_DOMCTL_setvcpucontext(domid, vcpuid, NULL)?
If not, maybe some small extensions to that call would be enough?

I think if we do need an entirely new hypercall, it should be part of
the DOMCTL call along with the other vcpu operations, rather than having
a new top-level hypercall of its own.



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