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-rw-r--r--arch/arm/include/asm/memory.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index ca208335fde6..31c07a2cc100 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -295,6 +295,11 @@ extern long long arch_phys_to_idmap_offset;
* of physical memory for idmap purposes. Most cases should leave these
* untouched. Note: this can only return addresses less than 4GiB.
*/
+static inline bool arm_has_idmap_alias(void)
+{
+ return IS_ENABLED(CONFIG_MMU) && arch_phys_to_idmap_offset != 0;
+}
+
#define IDMAP_INVALID_ADDR ((u32)~0)
static inline unsigned long phys_to_idmap(phys_addr_t addr)