[v5,00/13] xen/arm: Split MMU code as the prepration of MPU work

Message

Henry Wang Aug. 14, 2023, 4:25 a.m. UTC

Based on the discussion in the Xen Summit [1], sending this series out after
addressing the comments in v4 [2] as the preparation work to add MPU support.
Full series of single core MPU support to boot Linux guest can be found
in [3], which passed the GitLab CI check in [4].

Mostly code movement, with some of Kconfig and build system (mainly Makefiles)
adjustment. No functional change expected.

This series is based on:
a9a3b432a8 x86: adjust comparison for earlier signedness change

[1] https://lore.kernel.org/xen-devel/[e-mail]/
[2] https://lore.kernel.org/xen-devel/[e-mail]/
[3] https://gitlab.com/xen-project/people/henryw/xen/-/commits/mpu_v5/
[4] https://gitlab.com/xen-project/people/henryw/xen/-/pipelines/966450933

Henry Wang (4):
  xen/arm: Introduce CONFIG_MMU Kconfig option
  xen/arm64: Split and move MMU-specific head.S to mmu/head.S
  xen/arm64: Fold setup_fixmap() to create_page_tables()
  xen/arm: Extract MMU-specific code

Penny Zheng (6):
  xen/arm: Fold pmap and fixmap into MMU system
  xen/arm: mm: Use generic variable/function names for extendability
  xen/arm: mmu: move MMU-specific setup_mm to mmu/setup.c
  xen/arm: mmu: move MMU specific P2M code to mmu/p2m.{c,h}
  xen/arm: mmu: relocate copy_from_paddr() to setup.c
  xen/arm: mmu: enable SMMU subsystem only in MMU

Wei Chen (3):
  xen/arm64: head.S: Introduce enable_{boot,secondary}_cpu_mm()
  xen/arm64: prepare for moving MMU related code from head.S
  xen/arm: Move MMU related definitions from config.h to mmu/layout.h

 xen/arch/arm/Kconfig                    |    5 +-
 xen/arch/arm/Makefile                   |    1 +
 xen/arch/arm/arm32/head.S               |    4 +-
 xen/arch/arm/arm64/Makefile             |    2 +-
 xen/arch/arm/arm64/head.S               |  496 +------
 xen/arch/arm/arm64/mmu/Makefile         |    2 +
 xen/arch/arm/arm64/mmu/head.S           |  460 ++++++
 xen/arch/arm/arm64/{ => mmu}/mm.c       |   11 +-
 xen/arch/arm/arm64/smpboot.c            |    6 +-
 xen/arch/arm/include/asm/arm64/macros.h |   36 +
 xen/arch/arm/include/asm/arm64/mm.h     |    7 +-
 xen/arch/arm/include/asm/config.h       |  132 +-
 xen/arch/arm/include/asm/fixmap.h       |    7 +-
 xen/arch/arm/include/asm/mm.h           |   30 +-
 xen/arch/arm/include/asm/mmu/layout.h   |  146 ++
 xen/arch/arm/include/asm/mmu/mm.h       |   55 +
 xen/arch/arm/include/asm/mmu/p2m.h      |   18 +
 xen/arch/arm/include/asm/p2m.h          |   33 +-
 xen/arch/arm/include/asm/page.h         |   15 -
 xen/arch/arm/include/asm/setup.h        |    8 +-
 xen/arch/arm/kernel.c                   |   27 -
 xen/arch/arm/mm.c                       | 1119 --------------
 xen/arch/arm/mmu/Makefile               |    3 +
 xen/arch/arm/mmu/mm.c                   | 1153 +++++++++++++++
 xen/arch/arm/mmu/p2m.c                  | 1610 ++++++++++++++++++++
 xen/arch/arm/mmu/setup.c                |  366 +++++
 xen/arch/arm/p2m.c                      | 1772 ++---------------------
 xen/arch/arm/setup.c                    |  326 +----
 xen/arch/arm/smpboot.c                  |    4 +-
 xen/arch/arm/xen.lds.S                  |    1 +
 xen/drivers/passthrough/Kconfig         |    3 +-
 31 files changed, 4042 insertions(+), 3816 deletions(-)
 create mode 100644 xen/arch/arm/arm64/mmu/Makefile
 create mode 100644 xen/arch/arm/arm64/mmu/head.S
 rename xen/arch/arm/arm64/{ => mmu}/mm.c (95%)
 create mode 100644 xen/arch/arm/include/asm/mmu/layout.h
 create mode 100644 xen/arch/arm/include/asm/mmu/mm.h
 create mode 100644 xen/arch/arm/include/asm/mmu/p2m.h
 create mode 100644 xen/arch/arm/mmu/Makefile
 create mode 100644 xen/arch/arm/mmu/mm.c
 create mode 100644 xen/arch/arm/mmu/p2m.c
 create mode 100644 xen/arch/arm/mmu/setup.c