[RFC 0/7] Proposal to make x86 IOMMU driver support configurable

[Xenia Ragiadakou <burzalodowa@xxxxxxxxx>]

This series aims to provide a means to render the iommu driver support for x86
configurable. Currently, irrespectively of the target platform, both AMD and
Intel iommu drivers are built. This is the case because the existent Kconfig
infrastructure does not provide any facilities for finer-grained configuration.

The series adds two new Kconfig options, AMD_IOMMU and INTEL_VTD, that can be
used to generate a tailored iommu configuration for a given platform.

This series will be part of a broader effort to separate platform specific
code and it is sent as an RFC to gather feedback regarding the way the
separation should be performed.

Xenia Ragiadakou (7):
  x86/iommu: make AMD-Vi and Intel VT-d support configurable
  x86/iommu: amd_iommu_perdev_intremap is AMD-Vi specific
  x86/iommu: iommu_igfx, iommu_qinval and iommu_snoop are VT-d specific
  x86/acpi: separate AMD-Vi and VT-d specific functions
  x86/iommu: the code addressing CVE-2011-1898 is VT-d specific
  x86/iommu: call pi_update_irte through an hvm_function callback
  x86/dpci: move hvm_dpci_isairq_eoi() to generic HVM code

 xen/arch/x86/hvm/vmx/vmx.c               | 10 ++++
 xen/arch/x86/include/asm/acpi.h          | 14 ++++++
 xen/arch/x86/include/asm/hvm/hvm.h       | 22 ++++++++
 xen/arch/x86/include/asm/hvm/io.h        |  1 +
 xen/arch/x86/include/asm/hvm/vmx/vmx.h   | 11 ++++
 xen/arch/x86/include/asm/iommu.h         |  5 +-
 xen/arch/x86/pv/hypercall.c              |  2 +
 xen/arch/x86/x86_64/entry.S              |  2 +
 xen/drivers/passthrough/Kconfig          | 16 ++++++
 xen/drivers/passthrough/Makefile         |  4 +-
 xen/drivers/passthrough/amd/iommu_init.c |  2 +
 xen/drivers/passthrough/iommu.c          |  7 ++-
 xen/drivers/passthrough/vtd/x86/Makefile |  1 -
 xen/drivers/passthrough/vtd/x86/hvm.c    | 64 ------------------------
 xen/drivers/passthrough/x86/hvm.c        | 47 +++++++++++++++--
 xen/include/xen/acpi.h                   |  3 --
 xen/include/xen/iommu.h                  | 11 ++--
 17 files changed, 141 insertions(+), 81 deletions(-)
 delete mode 100644 xen/drivers/passthrough/vtd/x86/hvm.c

-- 
2.37.2