To implement steal time, we need the hypervisor to pass the guest information
about how much time was spent running other processes outside the VM.
This is per-vcpu, and using the kvmclock structure for that is an abuse
we decided not to make.
In this patchset, I am introducing a new msr, KVM_MSR_STEAL_TIME, that
holds the memory area address containing information about steal time
This patch contains the headers for it. I am keeping it separate to facilitate
backports to people who wants to backport the kernel part but not the
hypervisor, or the other way around.
Signed-off-by: Glauber Costa<glommer@xxxxxxxxxx>
CC: Rik van Riel<riel@xxxxxxxxxx>
CC: Jeremy Fitzhardinge<jeremy.fitzhardinge@xxxxxxxxxx>
CC: Peter Zijlstra<peterz@xxxxxxxxxxxxx>
CC: Avi Kivity<avi@xxxxxxxxxx>