[PATCH 0/3][Xenial SRU] Fix rtc irq race in kvm

[Seth Forshee]

BugLink: http://bugs.launchpad.net/bugs/1649718

A race in kvm can cause the EOI signal for the rtc irq to be lost. When
this happens the guest will never see another rtc intterupt. This is
causing the kernel's rtc selftest to hang, resulting in an autopkgtest
failure for the zesty kernel.

The following three cherry picks from upstream fix this issue.

Thanks,
Seth


Joerg Roedel (3):
  kvm: x86: Convert ioapic->rtc_status.dest_map to a struct
  kvm: x86: Track irq vectors in ioapic->rtc_status.dest_map
  kvm: x86: Check dest_map->vector to match eoi signals for rtc

 arch/x86/kvm/ioapic.c   | 30 +++++++++++++++++++++---------
 arch/x86/kvm/ioapic.h   | 17 +++++++++++++++--
 arch/x86/kvm/irq_comm.c |  2 +-
 arch/x86/kvm/lapic.c    | 14 ++++++++------
 arch/x86/kvm/lapic.h    |  7 +++++--
 5 files changed, 50 insertions(+), 20 deletions(-)