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-rw-r--r--arch/x86/mm/dump_pagetables.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index 0470826d2bdc..a824d575bb84 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -188,11 +188,12 @@ static void printk_prot(struct seq_file *m, pgprot_t prot, int level, bool dmsg)
*/
static unsigned long normalize_addr(unsigned long u)
{
-#ifdef CONFIG_X86_64
- return (signed long)(u << 16) >> 16;
-#else
- return u;
-#endif
+ int shift;
+ if (!IS_ENABLED(CONFIG_X86_64))
+ return u;
+
+ shift = 64 - (__VIRTUAL_MASK_SHIFT + 1);
+ return (signed long)(u << shift) >> shift;
}
/*