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authorSteve Capper <steve.capper@arm.com>2018-12-06 22:50:38 +0000
committerWill Deacon <will.deacon@arm.com>2018-12-10 18:42:17 +0000
commite5d99157459f79ed26953e8a77addb9d3e0122b7 (patch)
tree6015178a01c73e35eb0a346c88f79f24171fd8b6 /arch/arm64/include
parent363524d2b12270d86677e1154ecc1c5061f43219 (diff)
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>
Diffstat (limited to 'arch/arm64/include')
-rw-r--r--arch/arm64/include/asm/processor.h7
1 files changed, 7 insertions, 0 deletions
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)