Messages in this thread | | | From | Liu Hua <> | Subject | [PATCH v3 0/2] change ARM linux memory layout to support 32 CPUs | Date | Tue, 15 Apr 2014 19:06:05 +0800 |
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This patch series change fixmap mapping region to suppport 32 CPUs. Because the "top_pmd" covers 0xfffe0000 - 0xffffffff(2M). And part is used by vector table. So I move this region down to 0xffc00000 - 0xffdffff.
I have tested the patches on arma9(2 CPUs) and arma15(16 CPUs) platforms
Changes from v2: --------------- - Removed two macros: FIX_KMAP_BEGIN and FIX_KMAP_END; - Unchanged DMA mapping region related documentation;
Changes from v1: --------------- - changed documentation for ARM linux memory layout. - moved fixmap mapping region, not just extended.
Liu Hua (2): ARM : fixmap : remove FIX_KMAP_BEGIN and FIX_KMAP_END ARM : change fixmap mapping region to support 32 CPUs
Documentation/arm/memory.txt | 2 +- arch/arm/include/asm/fixmap.h | 21 ++++----------------- arch/arm/include/asm/highmem.h | 1 + arch/arm/mm/highmem.c | 33 ++++++++++++++++++++++++--------- arch/arm/mm/mmu.c | 4 ++++ 5 files changed, 34 insertions(+), 27 deletions(-)
-- 1.9.0
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