[PATCH v4 00/16] Mem_event and mem_access for ARM

[Tamas K Lengyel <tklengyel@sec.in.tum.de>]

The ARM virtualization extension provides 2-stage paging, a similar mechanisms
to Intel's EPT, which can be used to trace the memory accesses performed by
the guest systems. This series moves the mem_access and mem_event codebase
into Xen common, performs some code cleanup and architecture specific division
of components, then sets up the necessary infrastructure in the ARM code
to deliver the event on R/W/X traps. Finally, we turn on the compilation of
mem_access and mem_event on ARM and perform the necessary changes to the
tools side.

This version of the series has been fully tested and is functional on an
Arndale board.

This PATCH series is also available at:
https://github.com/tklengyel/xen/tree/arm_memaccess4

Tamas K Lengyel (16):
  xen: Relocate mem_access and mem_event into common.
  xen: Relocate p2m_mem_access_resume to mem_access common
  xen: Relocate struct npfec definition into common
  xen: Relocate mem_event_op domctl and access_op memop into common.
  xen/mem_event: Clean out superfluous white-spaces
  xen/mem_event: Relax error condition on debug builds
  xen/mem_event: Abstract architecture specific sanity checks
  xen/mem_access: Abstract architecture specific sanity check
  xen/arm: p2m type definitions and changes
  xen/arm: Add set access required domctl
  xen/arm: Data abort exception (R/W) mem_events.
  xen/arm: Instruction prefetch abort (X) mem_event handling
  xen/arm: Shatter large pages when using mem_acces
  xen/arm: Enable the compilation of mem_access and mem_event on ARM.
  tools/libxc: Allocate magic page for mem access on ARM
  tools/tests: Enable xen-access on ARM

 MAINTAINERS                         |   6 +
 config/arm32.mk                     |   1 +
 config/arm64.mk                     |   1 +
 config/x86_32.mk                    |   2 +
 config/x86_64.mk                    |   2 +
 tools/libxc/xc_dom_arm.c            |   6 +-
 tools/tests/xen-access/Makefile     |   9 +-
 tools/tests/xen-access/xen-access.c |  94 ++++-
 xen/Rules.mk                        |   1 +
 xen/arch/arm/domctl.c               |  13 +
 xen/arch/arm/p2m.c                  | 509 ++++++++++++++++++++++---
 xen/arch/arm/traps.c                |  73 +++-
 xen/arch/x86/domctl.c               |  10 +-
 xen/arch/x86/hvm/hvm.c              |  61 +--
 xen/arch/x86/mm/Makefile            |   2 -
 xen/arch/x86/mm/hap/nested_ept.c    |   2 +-
 xen/arch/x86/mm/hap/nested_hap.c    |   2 +-
 xen/arch/x86/mm/mem_access.c        | 133 -------
 xen/arch/x86/mm/mem_event.c         | 705 -----------------------------------
 xen/arch/x86/mm/mem_paging.c        |   2 +-
 xen/arch/x86/mm/mem_sharing.c       |   2 +-
 xen/arch/x86/mm/p2m-pod.c           |   2 +-
 xen/arch/x86/mm/p2m-pt.c            |   2 +-
 xen/arch/x86/mm/p2m.c               |  26 +-
 xen/arch/x86/x86_64/compat/mm.c     |   4 +-
 xen/arch/x86/x86_64/mm.c            |   8 +-
 xen/common/Makefile                 |   2 +
 xen/common/domain.c                 |   1 +
 xen/common/domctl.c                 |   7 +
 xen/common/mem_access.c             | 157 ++++++++
 xen/common/mem_event.c              | 724 ++++++++++++++++++++++++++++++++++++
 xen/common/memory.c                 |  68 ++++
 xen/include/asm-arm/mm.h            |   1 -
 xen/include/asm-arm/p2m.h           | 109 +++++-
 xen/include/asm-arm/processor.h     |  70 +++-
 xen/include/asm-x86/config.h        |   6 +
 xen/include/asm-x86/hvm/hvm.h       |   7 +-
 xen/include/asm-x86/mem_access.h    |  39 --
 xen/include/asm-x86/mem_event.h     |  82 ----
 xen/include/asm-x86/mm.h            |  23 --
 xen/include/asm-x86/p2m.h           |  24 +-
 xen/include/xen/mem_access.h        |  63 ++++
 xen/include/xen/mem_event.h         | 141 +++++++
 xen/include/xen/mm.h                |  27 ++
 xen/include/xsm/dummy.h             |  26 +-
 xen/include/xsm/xsm.h               |  29 +-
 xen/xsm/dummy.c                     |   7 +-
 xen/xsm/flask/hooks.c               |  33 +-
 48 files changed, 2100 insertions(+), 1224 deletions(-)
 delete mode 100644 xen/arch/x86/mm/mem_access.c
 delete mode 100644 xen/arch/x86/mm/mem_event.c
 create mode 100644 xen/common/mem_access.c
 create mode 100644 xen/common/mem_event.c
 delete mode 100644 xen/include/asm-x86/mem_access.h
 delete mode 100644 xen/include/asm-x86/mem_event.h
 create mode 100644 xen/include/xen/mem_access.h
 create mode 100644 xen/include/xen/mem_event.h

-- 
2.1.0