Re: [PATCH v5 09/13] KVM: arm64: Allow userspace to configure a vCPU's virtual offset

2021-08-02 Thread Oliver Upton
On Fri, Jul 30, 2021 at 3:12 AM Marc Zyngier wrote: > > On Thu, 29 Jul 2021 18:32:56 +0100, > Oliver Upton wrote: > > > > Add a new vCPU attribute that allows userspace to directly manipulate > > the virtual counter-timer offset. Exposing such an interface allows for > > the precise migration of

Re: [PATCH v5 09/13] KVM: arm64: Allow userspace to configure a vCPU's virtual offset

2021-07-30 Thread Marc Zyngier
On Thu, 29 Jul 2021 18:32:56 +0100, Oliver Upton wrote: > > Add a new vCPU attribute that allows userspace to directly manipulate > the virtual counter-timer offset. Exposing such an interface allows for > the precise migration of guest virtual counter-timers, as it is an > indepotent interface.

[PATCH v5 09/13] KVM: arm64: Allow userspace to configure a vCPU's virtual offset

2021-07-29 Thread Oliver Upton
Add a new vCPU attribute that allows userspace to directly manipulate the virtual counter-timer offset. Exposing such an interface allows for the precise migration of guest virtual counter-timers, as it is an indepotent interface. Uphold the existing behavior of writes to CNTVOFF_EL2 for this new