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Subject[PATCH v2 00/20] ARM: Add support for the Large Physical Address Extensions
Date
Hi,

This set of patches adds support for the Large Physical Extensions on
the ARM architecture (available with the Cortex-A15 processor). LPAE
comes with a 3-level page table format (compared to 2-level for the
classic one), allowing up to 40-bit physical address space.

The ARM LPAE documentation is available from (free registration needed):

http://infocenter.arm.com/help/topic/com.arm.doc.ddi0406b_virtualization_extns/index.html

The full set of patches (kernel fixes, LPAE and support for an emulated
Versatile Express with Cortex-A15 tile) is available on this branch:

git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-2.6-cm.git arm-lpae

Changelog:

- Upgraded to latest mainline kernel (2.6.37-rc1) solving several conflicts.
- Enable CONFIG_ARCH_DMA_ADDR_T_64BIT for future compatibility with the unified
dma_addr_t patch.
- PHYS_ADDR_FMT printk format changed to be ANSI C compliant.
- Alignment fault now uses SIGBUS instead of SIGILL.
- arch/arm/kernel/head.S modified to use SECTION_SHIFT and reduce the amount of
#ifdef's.
- setup_mm_for_reboot() modified for LPAE.
- identity_mapping_add/del() modified for LPAE.
- Removed FIRST_USER_PGD_NR definition as the place where it was used have been
modified.

Any comments are welcome. Thanks.


Catalin Marinas (13):
ARM: LPAE: Use PMD_(SHIFT|SIZE|MASK) instead of PGDIR_*
ARM: LPAE: Factor out 2-level page table definitions into separate
files
ARM: LPAE: Do not assume Linux PTEs are always at PTRS_PER_PTE offset
ARM: LPAE: Introduce L_PTE_NOEXEC and L_PTE_NOWRITE
ARM: LPAE: Introduce the 3-level page table format definitions
ARM: LPAE: Page table maintenance for the 3-level format
ARM: LPAE: MMU setup for the 3-level page table format
ARM: LPAE: Change setup_mm_for_reboot() to work with LPAE
ARM: LPAE: Remove the FIRST_USER_PGD_NR and USER_PTRS_PER_PGD
definitions
ARM: LPAE: Add fault handling support
ARM: LPAE: Add context switching support
ARM: LPAE: Add SMP support for the 3-level page table format
ARM: LPAE: Add the Kconfig entries

Will Deacon (7):
ARM: LPAE: use u32 instead of unsigned long for 32-bit ptes
ARM: LPAE: use phys_addr_t instead of unsigned long for physical
addresses
ARM: LPAE: Use generic dma_addr_t type definition
ARM: LPAE: mark memory banks with start > ULONG_MAX as highmem
ARM: LPAE: use phys_addr_t for physical start address in early_mem
ARM: LPAE: add support for ATAG_MEM64
ARM: LPAE: define printk format for physical addresses and page table
entries

arch/arm/Kconfig | 2 +-
arch/arm/include/asm/cpu-multi32.h | 8 +
arch/arm/include/asm/cpu-single.h | 4 +
arch/arm/include/asm/memory.h | 17 +-
arch/arm/include/asm/outercache.h | 14 +-
arch/arm/include/asm/page-nommu.h | 8 +-
arch/arm/include/asm/page.h | 42 +----
arch/arm/include/asm/pgalloc.h | 34 +++-
arch/arm/include/asm/pgtable-2level-hwdef.h | 91 +++++++++
arch/arm/include/asm/pgtable-2level-types.h | 64 +++++++
arch/arm/include/asm/pgtable-2level.h | 147 +++++++++++++++
arch/arm/include/asm/pgtable-3level-hwdef.h | 78 ++++++++
arch/arm/include/asm/pgtable-3level-types.h | 55 ++++++
arch/arm/include/asm/pgtable-3level.h | 110 +++++++++++
arch/arm/include/asm/pgtable-hwdef.h | 81 +--------
arch/arm/include/asm/pgtable.h | 267 +++++++++++----------------
arch/arm/include/asm/proc-fns.h | 13 ++
arch/arm/include/asm/setup.h | 12 +-
arch/arm/include/asm/types.h | 24 +--
arch/arm/kernel/compat.c | 4 +-
arch/arm/kernel/head.S | 106 ++++++++----
arch/arm/kernel/module.c | 2 +-
arch/arm/kernel/setup.c | 19 ++-
arch/arm/kernel/smp.c | 43 ++++-
arch/arm/mm/Kconfig | 13 ++
arch/arm/mm/alignment.c | 8 +-
arch/arm/mm/context.c | 18 ++-
arch/arm/mm/dma-mapping.c | 6 +-
arch/arm/mm/fault.c | 88 +++++++++-
arch/arm/mm/init.c | 6 +-
arch/arm/mm/ioremap.c | 8 +-
arch/arm/mm/mm.h | 8 +-
arch/arm/mm/mmu.c | 99 +++++++---
arch/arm/mm/pgd.c | 20 ++-
arch/arm/mm/proc-macros.S | 5 +-
arch/arm/mm/proc-v7.S | 115 +++++++++++-
36 files changed, 1213 insertions(+), 426 deletions(-)
create mode 100644 arch/arm/include/asm/pgtable-2level-hwdef.h
create mode 100644 arch/arm/include/asm/pgtable-2level-types.h
create mode 100644 arch/arm/include/asm/pgtable-2level.h
create mode 100644 arch/arm/include/asm/pgtable-3level-hwdef.h
create mode 100644 arch/arm/include/asm/pgtable-3level-types.h
create mode 100644 arch/arm/include/asm/pgtable-3level.h



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