From mboxrd@z Thu Jan 1 00:00:00 1970 From: will.deacon@arm.com (Will Deacon) Date: Fri, 17 May 2013 18:07:42 +0100 Subject: [PATCH 03/14] ARM: LPAE: use phys_addr_t in free_memmap() In-Reply-To: <1368810473-26070-1-git-send-email-will.deacon@arm.com> References: <1368810473-26070-1-git-send-email-will.deacon@arm.com> Message-ID: <1368810473-26070-4-git-send-email-will.deacon@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Vitaly Andrianov The free_memmap() was mistakenly using unsigned long type to represent physical addresses. This breaks on PAE systems where memory could be placed above the 32-bit addressible limit. This patch fixes this function to properly use phys_addr_t instead. Signed-off-by: Vitaly Andrianov Signed-off-by: Cyril Chemparathy Acked-by: Nicolas Pitre Signed-off-by: Will Deacon --- arch/arm/mm/init.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 9a5cdc0..68c914e 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -442,7 +442,7 @@ static inline void free_memmap(unsigned long start_pfn, unsigned long end_pfn) { struct page *start_pg, *end_pg; - unsigned long pg, pgend; + phys_addr_t pg, pgend; /* * Convert start_pfn/end_pfn to a struct page pointer. @@ -454,8 +454,8 @@ free_memmap(unsigned long start_pfn, unsigned long end_pfn) * Convert to physical addresses, and * round start upwards and end downwards. */ - pg = (unsigned long)PAGE_ALIGN(__pa(start_pg)); - pgend = (unsigned long)__pa(end_pg) & PAGE_MASK; + pg = PAGE_ALIGN(__pa(start_pg)); + pgend = __pa(end_pg) & PAGE_MASK; /* * If there are free pages between these, -- 1.8.2.2