[SRU][Xenial][PATCH v2 0/3] Fix corruption on blocked_vcpu_on_cpu list

[Ioanna Alifieraki]

BugLink: https://bugs.launchpad.net/bugs/1908428

The following 3 patches fix the bug reported in [1].
They are backported to apply on 4.4 kernels. 
Backport is required becasue upstream commit 
bc22512bb24c(kvm: vmx: rename vmx_pre/post_block to pi_pre/post_block)
which renames  vmx_pre/post_block functions to pi_pre/post_block
is missing from 4.4.
Original patches come from [2] and have been accepted upstream.

[1] https://marc.info/?l=kvm&m=149559827906211&w=2
[2] https://lore.kernel.org/lkml/20170606105707.23207-1-pbonzini@redhat.com/ 

Paolo Bonzini (3):
  KVM: VMX: extract __pi_post_block
  KVM: VMX: avoid double list add with VT-d posted interrupts
  KVM: VMX: simplify and fix vmx_vcpu_pi_load

 arch/x86/kvm/vmx.c | 177 ++++++++++++++++++++++-----------------------
 1 file changed, 87 insertions(+), 90 deletions(-)

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2.17.1