Commit e5d99157 authored Dec 06, 2018 by Steve Capper Committed by Will Deacon Dec 10, 2018

arm64: mm: Define arch_get_mmap_end, arch_get_mmap_base



Now that we have DEFAULT_MAP_WINDOW defined, we can arch_get_mmap_end
and arch_get_mmap_base helpers to allow for high addresses in mmap.

Signed-off-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

parent 363524d2

arch/arm64/include/asm/processor.h

+7 −0

Original line number	Diff line number	Diff line
		@@ -80,6 +80,13 @@
		#define STACK_TOP STACK_TOP_MAX
		#endif /* CONFIG_COMPAT */

		#define arch_get_mmap_end(addr) ((addr > DEFAULT_MAP_WINDOW) ? TASK_SIZE :\
		DEFAULT_MAP_WINDOW)

		#define arch_get_mmap_base(addr, base) ((addr > DEFAULT_MAP_WINDOW) ? \
		base + TASK_SIZE - DEFAULT_MAP_WINDOW :\
		base)

		extern phys_addr_t arm64_dma_phys_limit;
		#define ARCH_LOW_ADDRESS_LIMIT (arm64_dma_phys_limit - 1)

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