From e5d99157459f79ed26953e8a77addb9d3e0122b7 Mon Sep 17 00:00:00 2001 From: Steve Capper Date: Thu, 6 Dec 2018 22:50:38 +0000 Subject: [PATCH] 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 Reviewed-by: Catalin Marinas Signed-off-by: Will Deacon --- arch/arm64/include/asm/processor.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index 102bab4344b7..759927faf7f6 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -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) -- GitLab