Re: [PATCH] kvmtool: ARM: timers: add "always-on" property to the device tree

2014-06-20 Thread Will Deacon
On Fri, Jun 20, 2014 at 05:38:14PM +0100, Marc Zyngier wrote: > The new optional property "always-on" indicates that the timers > are, well, always on when used with KVM. > > This allows for substantial performance improvement in the guest > (it switches to NOHZ instead of using a periodic tick pe

[PATCH] kvmtool: ARM: timers: add "always-on" property to the device tree

2014-06-20 Thread Marc Zyngier
The new optional property "always-on" indicates that the timers are, well, always on when used with KVM. This allows for substantial performance improvement in the guest (it switches to NOHZ instead of using a periodic tick per vcpu) and removes a lot of burden from the host (no need to inject ton