ARM: mm: Recreate kernel mappings in early_paging_init()

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This patch adds a step in the init sequence, in order to recreate
the kernel code/data page table mappings prior to full paging
initialization.  This is necessary on LPAE systems that run out of
a physical address space outside the 4G limit.  On these systems,
this implementation provides a machine descriptor hook that allows
the PHYS_OFFSET to be overridden in a machine specific fashion.

Cc: Russell King <linux@arm.linux.org.uk>

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

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Santosh Shilimkar 2013-07-31 12:44:46 -04:00

parent f52bb72254

commit a77e0c7b27

3 changed files with 87 additions and 0 deletions

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1

arch/arm/include/asm/mach/arch.h

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4

arch/arm/kernel/setup.c

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82

arch/arm/mm/mmu.c

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