diff options
| author | Kees Cook <keescook@chromium.org> | 2014-02-14 20:19:03 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-02-18 19:41:26 +0000 |
| commit | cd91b2fecfa66967e6ad732a9af860eb96c31ba4 (patch) | |
| tree | 05bc0e7b0c2364128489e32006d7a1ef0805379a /arch | |
| parent | 39544ac9df20f73e49fc6b9ac19ff533388c82c0 (diff) | |
| download | linux-cd91b2fecfa66967e6ad732a9af860eb96c31ba4.tar.gz | |
ARM: 7963/1: mm: report both sections from PMD
On 2-level page table systems, the PMD has 2 section entries. Report
these, otherwise ARM_PTDUMP will miss reporting permission changes on
odd section boundaries.
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mm/dump.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mm/dump.c b/arch/arm/mm/dump.c index 2b3a56414271..ef69152f9b52 100644 --- a/arch/arm/mm/dump.c +++ b/arch/arm/mm/dump.c @@ -264,6 +264,9 @@ static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start) note_page(st, addr, 3, pmd_val(*pmd)); else walk_pte(st, pmd, addr); + + if (SECTION_SIZE < PMD_SIZE && pmd_large(pmd[1])) + note_page(st, addr + SECTION_SIZE, 3, pmd_val(pmd[1])); } } |