diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-10-23 16:13:02 +0100 |
|---|---|---|
| committer | Krishna Reddy <vdumpa@nvidia.com> | 2014-04-03 08:49:57 -0700 |
| commit | e5d233a481d15e9778aaddc715803b32b4dfd014 (patch) | |
| tree | d9c27ca4e840fc9a43ab063c9e6e612b6beaf516 /arch/arm/include | |
| parent | 75b5bc53853a674adab091c5fc5d95f78ce5af56 (diff) | |
ARM: add support to dump the kernel page tables
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.
Change-Id: Ic7447182c8e5dc18a17338d7cb8abef983b1303e
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
Reviewed-on: http://git-master/r/391319
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/pgtable-2level.h | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/pgtable-3level.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h index f97ee02386ee..b082d0032d52 100644 --- a/arch/arm/include/asm/pgtable-2level.h +++ b/arch/arm/include/asm/pgtable-2level.h @@ -160,6 +160,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) return (pmd_t *)pud; } +#define pmd_large(pmd) (pmd_val(pmd) & 2) #define pmd_bad(pmd) (pmd_val(pmd) & 2) #define copy_pmd(pmdpd,pmdps) \ diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h index e890a8e11bc0..26c0dc4d0528 100644 --- a/arch/arm/include/asm/pgtable-3level.h +++ b/arch/arm/include/asm/pgtable-3level.h @@ -132,6 +132,7 @@ 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 { \ |