[PATCH v2 0/4] KVM: x86: kvmclock cleanups for Hyper-V TSC page

From: Paolo Bonzini
Date: Mon Sep 19 2016 - 07:39:32 EST


This implements the plan that we discussed at KVM Forum. Patch 3
implements a new function that returns the current value of kvmclock as
read by the guest. The function is then used to provide the Hyper-V
time reference counter. Now that the reference counter is synchronized
with kvmclock, the TSC page can be supported nicely.

Paolo

v2->v3: use TSC page information to compute time reference counter value
fixed case where TSC seq is 0xFFFFFFFE

Paolo Bonzini (4):
KVM: x86: always fill in vcpu->arch.hv_clock
KVM: x86: initialize kvmclock_offset
KVM: x86: introduce get_kvmclock_ns
KVM: x86: Hyper-V tsc page setup

arch/x86/entry/vdso/vclock_gettime.c | 2 +-
arch/x86/include/asm/kvm_host.h | 2 +
arch/x86/include/asm/pvclock.h | 5 +-
arch/x86/kernel/pvclock.c | 2 +-
arch/x86/kvm/hyperv.c | 162 +++++++++++++++++++++++++++++++----
arch/x86/kvm/hyperv.h | 3 +
arch/x86/kvm/x86.c | 158 ++++++++++++++++++++--------------
arch/x86/kvm/x86.h | 6 +-
8 files changed, 253 insertions(+), 87 deletions(-)

--
1.8.3.1