riscv: Fix wrong usage of lm_alias() when splitting a huge linear mapping

[platform/kernel/linux-starfive.git] / arch / riscv / mm / pageattr.c

diff --git a/arch/riscv/mm/pageattr.c b/arch/riscv/mm/pageattr.c
index e703a9b..01398fe 100644 (file)
--- a/arch/riscv/mm/pageattr.c
+++ b/arch/riscv/mm/pageattr.c
@@ -305,8 +305,13 @@ static int __set_memory(unsigned long addr, int numpages, pgprot_t set_mask,
                                goto unlock;
                }
        } else if (is_kernel_mapping(start) || is_linear_mapping(start)) {
-               lm_start = (unsigned long)lm_alias(start);
-               lm_end = (unsigned long)lm_alias(end);
+               if (is_kernel_mapping(start)) {
+                       lm_start = (unsigned long)lm_alias(start);
+                       lm_end = (unsigned long)lm_alias(end);
+               } else {
+                       lm_start = start;
+                       lm_end = end;
+               }
 
                ret = split_linear_mapping(lm_start, lm_end);
                if (ret)