Messages in this thread | | | From | Catalin Marinas <> | Subject | [PATCH v8 00/16] ARM: Add support for the Large Physical Address Extensions | Date | Mon, 7 Nov 2011 16:16:42 +0000 |
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Hi,
This is version 8 of the set of patches adding support for the Large Physical Address Extensions on the ARM architecture (available with the Cortex-A15 and Cortex-A7 processors).
This patch set against latest mainline is available on this branch:
git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux.git for-next
The full set of patches against Linux 3.1 (together with other ARM architecture developments) is available on this tree (rebased to latest mainline regularly):
git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-arm-arch.git
The patch set also includes Russell's nopud patch with an additional fix-up to be reviewed (they are not in mainline yet but LPAE depends on them).
My plan is to submit these patches for upstreaming during the upcoming merging window (for 3.3-rc1). Please let me know of any comments you may have.
Changelog (from v7):
- Several patches already merged upstream. - #ifdef's ARM_LPAE removed in pgable.h by moving page walking macros to separate 2level.h and 3level.h files (pgalloc.h still has two #ifdef's as it's not worth creating separate files for a few lines). - pmd_addr_end() re-introduced for the 2-level page tables as we use pgtable-nopud.h which has a more complex macro that is not eliminated by the compiler (following Russell's feedback). - alignment and debug fault codes moved to system.h near the hook_fault_code() function prototype. - FSR bits and fsr_fs() moved to header file. - exceptions_init() #ifdef'ed out entirely. - fsr_info and ifsr_info arrays moved to separate files for 2-level and 3-level page table formats. - Kconfig ARM_LPAE help improved. - proc-v7.S code that differs with LPAE has been factored out into proc-2level.S and proc-3level.S files to avoid lots of #ifdef's but also share the common code. Functions implemented differently are cpu_v7_switch_mm, cpu_v7_set_pte_ext and TTB setting via a new asm macro. - suspend/resume code in proc-v7.S has been modified to preserve TTBCR which is non-zero with LPAE. - Fix to ignore RAM banks beyond 4G when HIGHMEM is not enabled.
Catalin Marinas (12): ARM: pgtable: Fix compiler warning in ioremap.c introduced by nopud ARM: LPAE: Move page table maintenance macros to pgtable-2level.h ARM: LPAE: Move the FSR definitions to separate files ARM: LPAE: Factor out classic-MMU specific code into proc-v7-2level.S 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
Russell King (1): ARM: pgtable: switch to use pgtable-nopud.h
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/page.h | 4 + arch/arm/include/asm/pgalloc.h | 26 ++++- arch/arm/include/asm/pgtable-2level.h | 41 ++++++ 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 | 155 ++++++++++++++++++++++++ arch/arm/include/asm/pgtable-hwdef.h | 4 + arch/arm/include/asm/pgtable.h | 43 +------ arch/arm/include/asm/proc-fns.h | 21 +++ arch/arm/include/asm/setup.h | 8 ++ arch/arm/include/asm/system.h | 8 ++ arch/arm/include/asm/tlb.h | 12 ++- arch/arm/kernel/head.S | 45 +++++++- arch/arm/kernel/hw_breakpoint.c | 8 +- arch/arm/kernel/setup.c | 23 ++++ arch/arm/kernel/sleep.S | 2 + arch/arm/mm/Kconfig | 17 +++ arch/arm/mm/alignment.c | 2 +- arch/arm/mm/context.c | 19 +++- arch/arm/mm/fault.c | 111 +++-------------- arch/arm/mm/fault.h | 27 ++++- arch/arm/mm/fsr-2level.c | 78 ++++++++++++ arch/arm/mm/fsr-3level.c | 68 +++++++++++ arch/arm/mm/idmap.c | 36 +++++- arch/arm/mm/ioremap.c | 39 ++++--- arch/arm/mm/mmu.c | 46 +++++++- arch/arm/mm/pgd.c | 51 +++++++- arch/arm/mm/proc-macros.S | 5 +- arch/arm/mm/proc-v7-2level.S | 171 ++++++++++++++++++++++++++ arch/arm/mm/proc-v7-3level.S | 149 +++++++++++++++++++++++ arch/arm/mm/proc-v7.S | 175 +++------------------------ 34 files changed, 1238 insertions(+), 322 deletions(-) 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/fsr-2level.c create mode 100644 arch/arm/mm/fsr-3level.c create mode 100644 arch/arm/mm/proc-v7-2level.S create mode 100644 arch/arm/mm/proc-v7-3level.S
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