arm64: mm: apply __ro_after_init to memory_limit

This variable is only set during initialization, so mark with
__ro_after_init.

Signed-off-by: Peng Fan <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>

diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index a8834434af99ae0bdbaa4b5f36d522b4370702bf..db63cc885771a527b37f91e1eff0bf1f9432dbee 100644 (file)
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -172,7 +172,7 @@ int pfn_is_map_memory(unsigned long pfn)
 }
 EXPORT_SYMBOL(pfn_is_map_memory);
 
-static phys_addr_t memory_limit = PHYS_ADDR_MAX;
+static phys_addr_t memory_limit __ro_after_init = PHYS_ADDR_MAX;
 
 /*
  * Limit the memory size that was specified via FDT.