From f19866e5cb04f8f007cb422132ea4611cdacc8e3 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Thu, 8 Oct 2015 08:28:26 -0300 Subject: Linux-libre 4.2.3-gnu --- arch/arm64/include/asm/memory.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/arm64/include/asm') diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index f800d45ea..44a59c20e 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -113,6 +113,14 @@ extern phys_addr_t memstart_addr; /* PHYS_OFFSET - the physical address of the start of memory. */ #define PHYS_OFFSET ({ memstart_addr; }) +/* + * The maximum physical address that the linear direct mapping + * of system RAM can cover. (PAGE_OFFSET can be interpreted as + * a 2's complement signed quantity and negated to derive the + * maximum size of the linear mapping.) + */ +#define MAX_MEMBLOCK_ADDR ({ memstart_addr - PAGE_OFFSET - 1; }) + /* * PFNs are used to describe any physical page; this means * PFN 0 == physical address 0. -- cgit v1.2.3-54-g00ecf