Re: [PATCH] KVM: arm/arm64: Handle forward time correction gracefully

2016-04-17 Thread Tomasz Nowicki
On 11.04.2016 14:09, Tomasz Nowicki wrote: On 06.04.2016 10:37, Marc Zyngier wrote: On a host that runs NTP, corrections can have a direct impact on the background timer that we program on the behalf of a vcpu. In particular, NTP performing a forward correction will result in a timer expiring s

Re: [PATCH] KVM: arm/arm64: Handle forward time correction gracefully

2016-04-11 Thread Tomasz Nowicki
On 06.04.2016 10:37, Marc Zyngier wrote: On a host that runs NTP, corrections can have a direct impact on the background timer that we program on the behalf of a vcpu. In particular, NTP performing a forward correction will result in a timer expiring sooner than expected from a guest point of vi

Re: [PATCH] KVM: arm/arm64: Handle forward time correction gracefully

2016-04-06 Thread Marc Zyngier
On 06/04/16 11:33, Christoffer Dall wrote: > On Wed, Apr 06, 2016 at 09:37:22AM +0100, Marc Zyngier wrote: >> On a host that runs NTP, corrections can have a direct impact on >> the background timer that we program on the behalf of a vcpu. >> >> In particular, NTP performing a forward correction wi

Re: [PATCH] KVM: arm/arm64: Handle forward time correction gracefully

2016-04-06 Thread Christoffer Dall
On Wed, Apr 06, 2016 at 09:37:22AM +0100, Marc Zyngier wrote: > On a host that runs NTP, corrections can have a direct impact on > the background timer that we program on the behalf of a vcpu. > > In particular, NTP performing a forward correction will result in > a timer expiring sooner than expe

Re: [PATCH] KVM: arm/arm64: Handle forward time correction gracefully

2016-04-06 Thread Alexander Graf
On 04/06/2016 10:37 AM, Marc Zyngier wrote: On a host that runs NTP, corrections can have a direct impact on the background timer that we program on the behalf of a vcpu. In particular, NTP performing a forward correction will result in a timer expiring sooner than expected from a guest point of

Re: [PATCH] KVM: arm/arm64: Handle forward time correction gracefully

2016-04-06 Thread Alexander Graf
On 04/06/2016 10:37 AM, Marc Zyngier wrote: On a host that runs NTP, corrections can have a direct impact on the background timer that we program on the behalf of a vcpu. In particular, NTP performing a forward correction will result in a timer expiring sooner than expected from a guest point of

[PATCH] KVM: arm/arm64: Handle forward time correction gracefully

2016-04-06 Thread Marc Zyngier
On a host that runs NTP, corrections can have a direct impact on the background timer that we program on the behalf of a vcpu. In particular, NTP performing a forward correction will result in a timer expiring sooner than expected from a guest point of view. Not a big deal, we kick the vcpu anyway