Commit cd91b2fe authored Feb 14, 2014 by Kees Cook Committed by Russell King Feb 18, 2014

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>

parent 39544ac9

arch/arm/mm/dump.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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]));
		}
		}