[PATCH v4 0/7] Support 4 levels of translation tables for ARM64

[Jungseok Lee]

Hi All,

This v4 patchset supports 4 levels of tranlsation tables for ARM64.

Firstly, The patchset decouples page size from level of translation tables
as taking account into the comment from Catalin Marinas:
http://www.spinics.net/linux/lists/arm-kernel/msg319552.html

Then, it implements 4 levels of translation tables for native, HYP and
stage2 sides.

All ARMv8 and ARMv7 related changes are validated with FastModels+kvmtool and
A15+QEMU, respectively.

Changes since v1:
- fixed unmatched data types as per Steve's comment
- removed unnecessary #ifdef in arch/arm64/mm/* as per Steve's comment
- revised create_pgd_entry to deal with PUD entry as per Steve's comment
- introduced a macro for initial memblock limit as per Steve's comment
- dropped "Fix line length exceeding 80 characters" patch as per Marc's comment
- removed unnecessary #ifdef in arch/arm/kvm/mmu.c as per Marc's comment
- added a macro for a number of objects of as per Marc's comment

Changes since v2:
- revised some macros in a generic way as per Marc's comment
- added a 2 level option for kvm mmu cache allocation as per Marc's comment

Changes since v3:
- added #ifdef to decide swapper and idmap size as per Steve's comment
- introduced Steve's create_pgd_entry

Jungseok Lee (7):
      arm64: Use pr_* instead of printk
      arm64: Decouple page size from level of translation tables
      arm64: Introduce a kernel configuration option for VA_BITS
      arm64: Add a description on 48-bit address space with 4KB pages
      arm64: Add 4 levels of page tables definition with 4KB pages
      arm64: mm: Implement 4 levels of translation tables
      arm64: KVM: Implement 4 levels of translation tables for HYP and stage2

Documentation/arm64/memory.txt                |   59 +++++++++--
arch/arm/include/asm/kvm_mmu.h                |   10 ++
arch/arm/kvm/mmu.c                            |   88 ++++++++++++++---
arch/arm64/Kconfig                            |   51 +++++++++-
arch/arm64/include/asm/kvm_arm.h              |   34 +++++--
arch/arm64/include/asm/kvm_mmu.h              |   12 +++
arch/arm64/include/asm/memblock.h             |    6 ++
arch/arm64/include/asm/memory.h               |    6 +-
arch/arm64/include/asm/page.h                 |    6 +-
arch/arm64/include/asm/pgalloc.h              |   24 ++++-
arch/arm64/include/asm/pgtable-4level-hwdef.h |   50 ++++++++++
arch/arm64/include/asm/pgtable-4level-types.h |   71 +++++++++++++
arch/arm64/include/asm/pgtable-hwdef.h        |    8 +-
arch/arm64/include/asm/pgtable.h              |   53 +++++++++-
arch/arm64/include/asm/tlb.h                  |   11 ++-
arch/arm64/kernel/head.S                      |   46 +++++++--
arch/arm64/kernel/traps.c                     |   19 ++--
arch/arm64/mm/fault.c                         |    1 +
arch/arm64/mm/mmu.c                           |   16 ++-
19 files changed, 508 insertions(+), 63 deletions(-)

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