The 'prev_pud' local variable became unused after commit 04b67022fb6d 
("x86/mm/dump_pagetables: Speed up page tables dump for CONFIG_KASAN=y"),
let's remove it.

Cc: Dave Hansen <dave.han...@linux.intel.com>
Cc: Andy Lutomirski <l...@kernel.org>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Borislav Petkov <b...@alien8.de>
Cc: "H. Peter Anvin" <h...@zytor.com>
Cc: Andrey Ryabinin <aryabi...@virtuozzo.com>
Signed-off-by: Shaokun Zhang <zhangshao...@hisilicon.com>
---
 arch/x86/mm/dump_pagetables.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index e3cdc85ce5b6..ee8f8ab46941 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -444,7 +444,6 @@ static void walk_pud_level(struct seq_file *m, struct 
pg_state *st, p4d_t addr,
        int i;
        pud_t *start, *pud_start;
        pgprotval_t prot, eff;
-       pud_t *prev_pud = NULL;
 
        pud_start = start = (pud_t *)p4d_page_vaddr(addr);
 
@@ -462,7 +461,6 @@ static void walk_pud_level(struct seq_file *m, struct 
pg_state *st, p4d_t addr,
                } else
                        note_page(m, st, __pgprot(0), 0, 3);
 
-               prev_pud = start;
                start++;
        }
 }
-- 
2.7.4

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