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SubjectRe: [PATCH] KVM: PPC: Book3S HV: Remove vcpu->arch.dec usage
On Tue, Dec 19, 2017 at 03:56:24PM +0100, Alexander Graf wrote:
> On Book3S in HV mode, we don't use the vcpu->arch.dec field at all.
> Instead, all logic is built around vcpu->arch.dec_expires.
> So let's remove the one remaining piece of code that was setting it.
> Signed-off-by: Alexander Graf <>

Thanks, applied to my kvm-ppc-next branch.

> Looking through the DEC logic, I fail to see any code that allows
> save or restore of DEC. Do we maybe miss out on that register for
> (live) migration?

Yes, it looks like we do. I'm amazed no-one has noticed before. I'll
fix it.


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