Failed on T-4.4 / X-4.4 AMD64
Passed on X-4.15 / B-4.15 AMD64

** Tags added: sr

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: linux-aws (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: linux-azure (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Tags removed: sr
** Tags added: sru-20200316

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https://bugs.launchpad.net/bugs/1821390

Title:
  apic-split will fail in kvm_units_tests

Status in ubuntu-kernel-tests:
  Triaged
Status in linux package in Ubuntu:
  Incomplete
Status in linux-aws package in Ubuntu:
  New
Status in linux-azure package in Ubuntu:
  New
Status in linux source package in Xenial:
  New
Status in linux-aws source package in Xenial:
  New
Status in linux-azure source package in Xenial:
  New
Status in linux source package in Bionic:
  Incomplete
Status in linux-aws source package in Bionic:
  New
Status in linux-azure source package in Bionic:
  New
Status in linux source package in Cosmic:
  Incomplete
Status in linux-aws source package in Cosmic:
  New
Status in linux-azure source package in Cosmic:
  New

Bug description:
  Reproducible: Yes, every time.
  Series: cosmic
  Kernel: "linux-aws 4.18.0-1012.14"
  Steps:

  1.) apt-get install --yes --allow build-essential cpu-checker qemu-kvm git 
gcc-multilib
  2.) git clone --depth=1 
https://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git
  3.) cd kvm-unit-tests; ./configure; make

  4.) TESTNAME=apic-split TIMEOUT=90s ACCEL= ./x86/run x86/apic.flat
  -smp 2 -cpu qemu64,+x2apic,+tsc-deadline -machine kernel_irqchip=split

  root@ip-172-31-5-254:/home/ubuntu/kvm-unit-tests# TESTNAME=apic-split 
TIMEOUT=90s ACCEL= ./x86/run x86/apic.flat -smp 2 -cpu 
qemu64,+x2apic,+tsc-deadline -machine kernel_irqchip=split
  timeout -k 1s --foreground 90s /usr/bin/qemu-system-x86_64 -nodefaults 
-device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -vnc none 
-serial stdio -device pci-testdev -machine accel=kvm -kernel x86/apic.flat -smp 
2 -cpu qemu64,+x2apic,+tsc-deadline -machine kernel_irqchip=split # -initrd 
/tmp/tmp.ZHQwPUOuLD
  qemu-system-x86_64: warning: host doesn't support requested feature: 
CPUID.80000001H:ECX.svm [bit 2]
  qemu-system-x86_64: warning: host doesn't support requested feature: 
CPUID.80000001H:ECX.svm [bit 2]
  enabling apic
  enabling apic
  paging enabled
  cr0 = 80010011
  cr3 = 459000
  cr4 = 20
  apic version: 1050014
  PASS: apic existence
  PASS: xapic id matches cpuid
  PASS: writeable xapic id
  PASS: non-writeable x2apic id
  PASS: sane x2apic id
  PASS: x2apic id matches cpuid
  PASS: correct xapic id after reset
  PASS: apic_disable: Local apic disabled
  PASS: apic_disable: CPUID.1H:EDX.APIC[bit 9] is clear
  PASS: apic_disable: *0xfee00030: ffffffff
  PASS: apic_disable: CR8: 0
  PASS: apic_disable: CR8: f
  PASS: apic_disable: *0xfee00080: ffffffff
  PASS: apic_disable: Local apic enabled in xAPIC mode
  PASS: apic_disable: CPUID.1H:EDX.APIC[bit 9] is set
  PASS: apic_disable: *0xfee00030: 1050014
  PASS: apic_disable: *0xfee00080: 0
  PASS: apic_disable: *0xfee00080: f0
  PASS: apic_disable: Local apic enabled in x2APIC mode
  PASS: apic_disable: CPUID.1H:EDX.APIC[bit 9] is set
  PASS: apic_disable: *0xfee00030: ffffffff
  PASS: apic_disable: CR8: 0
  PASS: apic_disable: CR8: f
  PASS: apic_disable: *0xfee00080: ffffffff
  x2apic enabled
  PASS: x2apic enabled to invalid state
  PASS: x2apic enabled to apic enabled
  PASS: x2apic enabled to disabled state
  PASS: disabled to invalid state
  PASS: disabled to x2apic enabled
  PASS: apic enabled to invalid state
  PASS: apicbase: relocate apic
  PASS: apicbase: reserved physaddr bits
  PASS: apicbase: reserved low bits
  PASS: self ipi
  starting broadcast (x2apic)
  PASS: APIC physical broadcast address
  PASS: APIC physical broadcast shorthand
  FAIL: PV IPIs testing
  PASS: nmi-after-sti
  PASS: multiple nmi
  PASS: APIC LVT timer one shot
  starting apic change mode
  PASS: TMICT value reset
  PASS: TMCCT should have a non-zero value
  PASS: TMCCT should have reached 0
  PASS: TMCCT should have a non-zero value
  PASS: TMCCT should not be reset to TMICT value
  PASS: TMCCT should be reset to the initial-count
  PASS: TMCCT should not be reset to init
  PASS: TMCCT should have reach zero
  PASS: TMCCT should stay at zero
  PASS: tsc deadline timer
  PASS: tsc deadline timer clearing
  SUMMARY: 51 tests, 1 unexpected failures

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