diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-10-23 16:13:02 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-12-11 09:53:13 +0000 |
| commit | 1fd15b879d0075c8916e52fb9e52522827433d1f (patch) | |
| tree | a9f950c9dd0eaf9de3c7d359d20bca783564630f /arch/arm/include/asm | |
| parent | 6ce4eac1f600b34f2f7f58f9cd8f0503d79e42ae (diff) | |
| download | linux-1fd15b879d0075c8916e52fb9e52522827433d1f.tar.bz2 | |
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.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm')
| -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 86a659a19526..dfff709fda3c 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 4f9503908dca..03243f7eeddf 100644 --- a/arch/arm/include/asm/pgtable-3level.h +++ b/arch/arm/include/asm/pgtable-3level.h @@ -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 { \ |