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2011-02-21ARM: pgtable: add pud-level codeRussell King
Add pud_offset() et.al. between the pgd and pmd code in preparation of using pgtable-nopud.h rather than 4level-fixup.h. This incorporates a fix from Jamie Iles <jamie@jamieiles.com> for uaccess_with_memcpy.c. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-22ARM: pgtable: use conventional page table code for identity mappingsRussell King
Remove some knowledge of our 2-level page table layout from the identity mapping code - we assume that a step size of PGDIR_SIZE will allow us to step over all entries. While this is true today, it won't be true in the near future. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-22ARM: pgtable: collect up identity mapping functionsRussell King
We have two places where we create identity mappings - one when we bring secondary CPUs online, and one where we setup some mappings for soft- reboot. Combine these two into a single implementation. Also collect the identity mapping deletion function. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>