From 1fd15b879d0075c8916e52fb9e52522827433d1f Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 23 Oct 2013 16:13:02 +0100 Subject: 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 --- arch/arm/include/asm/pgtable-2level.h | 1 + arch/arm/include/asm/pgtable-3level.h | 1 + 2 files changed, 2 insertions(+) (limited to 'arch/arm/include/asm') 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 { \ -- cgit v1.2.3