[Xen-devel] [PATCH 0/4] Add posted interrupt supporting

[Yang Zhang <yang.z.zhang@xxxxxxxxx>]

From: Yang Zhang <yang.z.zhang@xxxxxxxxx>

The follwoing patches are adding the Posted Interrupt supporting to Xen:
Posted Interrupt allows vAPIC interrupts to inject into guest directly
without any vmexit.

- When delivering a interrupt to guest, if target vcpu is running,
  update Posted-interrupt requests bitmap and send a notification event
  to the vcpu. Then the vcpu will handle this interrupt automatically,
  without any software involvemnt.

- If target vcpu is not running or there already a notification event
  pending in the vcpu, do nothing. The interrupt will be handled by
  next vm entry

Refer to Intel SDM vol3, 29.6  to get more information.

Yang Zhang (4):
  VMX: Detect posted interrupt capability
  VMX: Turn on posted interrupt bit in vmcs
  VMX: Add posted interrupt supporting
  VMX: Use posted interrupt to deliver virutal interrupt

 xen/arch/x86/hvm/vioapic.c                     |    4 +-
 xen/arch/x86/hvm/vlapic.c                      |   19 +++++-
 xen/arch/x86/hvm/vmsi.c                        |    5 +-
 xen/arch/x86/hvm/vmx/vmcs.c                    |   18 +++++-
 xen/arch/x86/hvm/vmx/vmx.c                     |   81 ++++++++++++++++++++++++
 xen/arch/x86/hvm/vmx/vpmu_core2.c              |    5 +-
 xen/arch/x86/hvm/vpt.c                         |   10 ++-
 xen/include/asm-x86/hvm/hvm.h                  |    2 +
 xen/include/asm-x86/hvm/vlapic.h               |    1 +
 xen/include/asm-x86/hvm/vmx/vmcs.h             |   13 ++++
 xen/include/asm-x86/hvm/vmx/vmx.h              |   22 +++++++
 xen/include/asm-x86/mach-default/irq_vectors.h |    3 +-
 12 files changed, 172 insertions(+), 11 deletions(-)


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