Messages in this thread | | | From | Catalin Marinas <> | Subject | [PATCH v7 00/16] ARM: Add support for the Large Physical Address Extensions | Date | Wed, 10 Aug 2011 16:03:23 +0100 |
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Hi,
This is version 7 of the set of patches adding support for the Large Physical Address Extensions on the ARM architecture (available with the Cortex-A15 processor). LPAE comes with a new 3-level page table format (compared to 2-level for the classic one), allowing up to 40-bit physical address space.
This set of patches against Linux 3.1-rc1 is available on this branch:
git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-2.6-cm.git for-next
The full set of patches against Linux 3.0 (LPAE, support for an emulated Versatile Express with Cortex-A15 tile and generic timers) is available on this branch:
git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-2.6-cm.git arm-lpae
Changelog (from v6):
- Rebased against Linux 3.1-rc1. - pteval_t, pmdval_t etc. typedefs reworked for consistency. - __phys_to_virt/__virt_to_phys macros typecasting patch removed (an explicit cast to unsigned long has been added to dma_to_virt). - Generic dma_addr_t patch removed (already fixed upstream).
Known issues:
- RMK's nopud patch not in mainline yet (compiler warnings) but carried over in the above branches. - No decission on using the ISB during MMU enabling (no simple alternative solution). - The patch converting PGDIR_* to PMD_* may be further modified depending on the merging of the DMA coherent patches and other changes to prepare_page_tables() proposed by RMK.
Catalin Marinas (13): ARM: LPAE: Cast the dma_addr_t argument to unsigned long in dma_to_virt ARM: LPAE: Use PMD_(SHIFT|SIZE|MASK) instead of PGDIR_* ARM: LPAE: Factor out 2-level page table definitions into separate files ARM: LPAE: Add (pte|pmd)val_t type definitions as u32 ARM: LPAE: Use a mask for physical addresses in page table entries 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: Invalidate the TLB before freeing the PMD ARM: LPAE: Add fault handling support ARM: LPAE: Add context switching support ARM: LPAE: Add identity mapping support for the 3-level page table format ARM: LPAE: Add the Kconfig entries
Will Deacon (3): ARM: LPAE: add ISBs around MMU enabling code ARM: LPAE: mark memory banks with start > ULONG_MAX as highmem ARM: LPAE: add support for ATAG_MEM64
arch/arm/Kconfig | 2 +- arch/arm/boot/compressed/head.S | 1 + arch/arm/include/asm/assembler.h | 11 + arch/arm/include/asm/dma-mapping.h | 2 +- arch/arm/include/asm/page.h | 44 +--- arch/arm/include/asm/pgalloc.h | 28 ++- arch/arm/include/asm/pgtable-2level-hwdef.h | 93 ++++++ arch/arm/include/asm/pgtable-2level-types.h | 67 +++++ arch/arm/include/asm/pgtable-2level.h | 143 +++++++++ arch/arm/include/asm/pgtable-3level-hwdef.h | 82 ++++++ arch/arm/include/asm/pgtable-3level-types.h | 70 +++++ arch/arm/include/asm/pgtable-3level.h | 107 +++++++ arch/arm/include/asm/pgtable-hwdef.h | 81 +----- arch/arm/include/asm/pgtable.h | 211 +++++--------- arch/arm/include/asm/proc-fns.h | 21 ++ arch/arm/include/asm/setup.h | 8 + arch/arm/include/asm/tlb.h | 11 +- arch/arm/include/asm/tlbflush.h | 4 +- arch/arm/kernel/head.S | 119 ++++++--- arch/arm/kernel/module.c | 2 +- arch/arm/kernel/setup.c | 10 + arch/arm/kernel/sleep.S | 2 + arch/arm/mm/Kconfig | 13 + arch/arm/mm/Makefile | 4 + arch/arm/mm/alignment.c | 8 +- arch/arm/mm/context.c | 19 +- arch/arm/mm/dma-mapping.c | 6 +- arch/arm/mm/fault.c | 87 ++++++ arch/arm/mm/idmap.c | 36 +++- arch/arm/mm/ioremap.c | 8 +- arch/arm/mm/mm.h | 4 +- arch/arm/mm/mmu.c | 53 +++- arch/arm/mm/pgd.c | 51 +++- arch/arm/mm/proc-macros.S | 5 +- arch/arm/mm/proc-v7lpae.S | 422 +++++++++++++++++++++++++++ 35 files changed, 1504 insertions(+), 331 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 create mode 100644 arch/arm/mm/proc-v7lpae.S
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