[PATCH v3 RESEND 12/17] ARM: LPAE: define ARCH_LOW_ADDRESS_LIMIT for bootmem
From: catalin.marinas@arm.com (Catalin Marinas)
Date: 2012-09-24 14:16:54
On Fri, Sep 21, 2012 at 04:56:10PM +0100, Cyril Chemparathy wrote:
quoted hunk ↗ jump to hunk
This patch adds an architecture defined override for ARCH_LOW_ADDRESS_LIMIT. On PAE systems, the absence of this override causes bootmem to incorrectly limit itself to 32-bit addressable physical memory. Signed-off-by: Cyril Chemparathy <redacted> Signed-off-by: Vitaly Andrianov <redacted> --- arch/arm/include/asm/memory.h | 2 ++ 1 file changed, 2 insertions(+)diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index f3e8f88..19221c2 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h@@ -315,6 +315,8 @@ static inline __deprecated void *bus_to_virt(unsigned long x) #define arch_is_coherent() 0 #endif +#define ARCH_LOW_ADDRESS_LIMIT PHYS_MASK
It looks like mm/bootmem.c casts this to unsigned long anyway, so the patch doesn't have any effect on its own. -- Catalin