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Diffstat (limited to 'arch/x86/mm/init_64.c')
-rw-r--r--arch/x86/mm/init_64.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 95651dc58e09..0a59daf799f8 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -990,7 +990,13 @@ remove_p4d_table(p4d_t *p4d_start, unsigned long addr, unsigned long end,
pud_base = pud_offset(p4d, 0);
remove_pud_table(pud_base, addr, next, direct);
- free_pud_table(pud_base, p4d);
+ /*
+ * For 4-level page tables we do not want to free PUDs, but in the
+ * 5-level case we should free them. This code will have to change
+ * to adapt for boot-time switching between 4 and 5 level page tables.
+ */
+ if (CONFIG_PGTABLE_LEVELS == 5)
+ free_pud_table(pud_base, p4d);
}
if (direct)