arm64: mm: apply __ro_after_init to memory_limit

MrVan · ctmarinas · commit bb425a759847 · 2022-01-20T09:15:16.000Z
This variable is only set during initialization, so mark with __ro_after_init. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20211215064559.2843555-1-peng.fan@oss.nxp.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git 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.

Original file line number	Diff line number	Diff line change
`@@ -172,7 +172,7 @@ int pfn_is_map_memory(unsigned long pfn)`
`172`	`172`	`}`
`173`	`173`	`EXPORT_SYMBOL(pfn_is_map_memory);`
`174`	`174`
`175`		`-static phys_addr_t memory_limit = PHYS_ADDR_MAX;`
	`175`	`+static phys_addr_t memory_limit __ro_after_init = PHYS_ADDR_MAX;`
`176`	`176`
`177`	`177`	`/*`
`178`	`178`	`* Limit the memory size that was specified via FDT.`