[v3 00/15] Add VT-d Posted-Interrupts support

[Feng Wu <feng.wu@intel.com>]

VT-d Posted-Interrupts is an enhancement to CPU side Posted-Interrupt.
With VT-d Posted-Interrupts enabled, external interrupts from
direct-assigned devices can be delivered to guests without VMM
intervention when guest is running in non-root mode.

You can find the VT-d Posted-Interrtups Spec. in the following URL:
http://www.intel.com/content/www/us/en/intelligent-systems/intel-technology/vt-directed-io-spec.html

This patch set follow the following design:
http://article.gmane.org/gmane.comp.emulators.xen.devel/236476

v3:
Changelogs are in the head of each patch.

v2:
1. Add the design doc.
2. Coding style fix.
3. Add some comments for struct pi_desc.
4. Extend 'struct iremap_entry' to a more common format.
5. Delete the atomic helper functions for pi descriptor manipulation.
6. Add the new command line in docs/misc/xen-command-line.markdown.
7. Use macros to replace some magic numbers.

Feng Wu (15):
  Vt-d Posted-intterrupt (PI) design
  Add helper macro for X86_FEATURE_CX16 feature detection
  Add cmpxchg16b support for x86-64
  iommu: Add iommu_intpost to control VT-d Posted-Interrupts feature
  vt-d: VT-d Posted-Interrupts feature detection
  vmx: Extend struct pi_desc to support VT-d Posted-Interrupts
  vmx: Initialize VT-d Posted-Interrupts Descriptor
  Suppress posting interrupts when 'SN' is set
  vt-d: Extend struct iremap_entry to support VT-d Posted-Interrupts
  vt-d: Add API to update IRTE when VT-d PI is used
  Update IRTE according to guest interrupt config changes
  vmx: posted-interrupt handling when vCPU is blocked
  vmx: Properly handle notification event when vCPU is running
  Update Posted-Interrupts Descriptor during vCPU scheduling
  Add a command line parameter for VT-d posted-interrupts

 docs/misc/vtd-pi.txt                   | 333 +++++++++++++++++++++++++++++++++
 docs/misc/xen-command-line.markdown    |   9 +-
 xen/arch/x86/hvm/hvm.c                 |   6 +
 xen/arch/x86/hvm/vmx/vmcs.c            |  21 +++
 xen/arch/x86/hvm/vmx/vmx.c             | 263 +++++++++++++++++++++++++-
 xen/common/schedule.c                  |   4 +
 xen/drivers/passthrough/io.c           |  96 +++++++++-
 xen/drivers/passthrough/iommu.c        |  12 +-
 xen/drivers/passthrough/vtd/intremap.c | 190 ++++++++++++++-----
 xen/drivers/passthrough/vtd/iommu.c    |  18 +-
 xen/drivers/passthrough/vtd/iommu.h    |  45 +++--
 xen/drivers/passthrough/vtd/utils.c    |  10 +-
 xen/include/asm-arm/domain.h           |   2 +
 xen/include/asm-x86/cpufeature.h       |   2 +
 xen/include/asm-x86/hvm/hvm.h          |   3 +
 xen/include/asm-x86/hvm/vmx/vmcs.h     |  27 ++-
 xen/include/asm-x86/hvm/vmx/vmx.h      |  18 ++
 xen/include/asm-x86/iommu.h            |   2 +
 xen/include/asm-x86/x86_64/system.h    |  28 +++
 xen/include/xen/iommu.h                |   2 +-
 xen/include/xen/types.h                |   5 +
 21 files changed, 1019 insertions(+), 77 deletions(-)
 create mode 100644 docs/misc/vtd-pi.txt

-- 
2.1.0