This series does some cleanup and precursor changes to the hyper-v clock
source and introduces support for TSC page based clock in root partition.

Hyper-V root partition requires kernel to map the page, specified by the
hypervisor (instead of provide the PFN to the hypervisor like it's done in
guest partition).

The following series implements...

---

Stanislav Kinsburskiy (4):
      drivers/clocksource/hyper-v: Introduce a pointer to TSC page
      drivers/clocksource/hyper-v: Introduce TSC MSR register structure
      drivers/clocksource/hyper-v: Use TSC PFN getter to map vvar page
      drivers/clocksource/hyper-v: Add TSC page support for root partition


 arch/x86/entry/vdso/vma.c          |    7 ++---
 arch/x86/hyperv/hv_init.c          |    2 +
 drivers/clocksource/hyperv_timer.c |   51 ++++++++++++++++++++++++++----------
 include/clocksource/hyperv_timer.h |    7 +++++
 4 files changed, 49 insertions(+), 18 deletions(-)