[Qemu-devel] [PATCH v2 0/7] KVM: Hyper-V SynIC timers migration fixes

[Andrey Smetanin]

During testing of Windows 2012R2 guest migration with
Hyper-V SynIC timers enabled we found several bugs
which lead to restoring guest in a hung state.

This patch series provides several fixes to make the
migration of guest with Hyper-V SynIC timers enabled
succeed.

The series applies on top of
'kvm/x86: Remove Hyper-V SynIC timer stopping'
previously sent.

Changes v2:
* fix incorrect logical operation for one-shot timers
* drop stimer->count == 0 inside stimer_start()
* comment stimer_start() assumtions

Signed-off-by: Andrey Smetanin <address@hidden>
Reviewed-by: Roman Kagan <address@hidden>
CC: Gleb Natapov <address@hidden>
CC: Paolo Bonzini <address@hidden>
CC: Roman Kagan <address@hidden>
CC: Denis V. Lunev <address@hidden>
CC: address@hidden

Andrey Smetanin (7):
  kvm/x86: Hyper-V timers fix incorrect logical operation
  kvm/x86: Drop stimer_stop() function
  kvm/x86: Hyper-V unify stimer_start() and stimer_restart()
  kvm/x86: Reorg stimer_expiration() to better control timer restart
  kvm/x86: Hyper-V fix SynIC timer disabling condition
  kvm/x86: Skip SynIC vector check for QEMU side
  kvm/x86: Update SynIC timers on guest entry only

 arch/x86/kvm/hyperv.c | 119 ++++++++++++++++++++++++--------------------------
 arch/x86/kvm/x86.c    |   6 +++
 2 files changed, 63 insertions(+), 62 deletions(-)

-- 
2.4.3