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ARM: add support to dump the kernel page tables

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This patch allows the kernel page tables to be dumped via a debugfs file,
allowing kernel developers to check the layout of the kernel page tables
and the verify the various permissions and type settings.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2013-10-23 16:13:02 +01:00
parent 6ce4eac1f6
commit 1fd15b879d
5 changed files with 360 additions and 0 deletions
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arch/arm/include/asm/pgtable-3level.h
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@@ -142,6 +142,7 @@
PMD_TYPE_TABLE)
#define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \
PMD_TYPE_SECT)
#define pmd_large(pmd) pmd_sect(pmd)
#define pud_clear(pudp) \
do { \