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/AS8PR08MB799122F8B0CB841DED64F4819226A@AS8PR08MB7991.eurprd08.prod.outlook.com/
[2] https://lore.kernel.org/xen-devel/20230801034419.2047541-1-Henry.Wang@arm.com/
[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
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2.25.1