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Subject[RFC PATCH 1/9] arc: mm: migrate: add pmd swap entry to support thp migration.
Date
From: Zi Yan <zi.yan@cs.rutgers.edu>

Signed-off-by: Zi Yan <zi.yan@cs.rutgers.edu>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-mm@kvack.org
---
arch/arc/include/asm/pgtable.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 08fe33830d4b..246934105e61 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -383,7 +383,9 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,

/* NOPs, to keep generic kernel happy */
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
+#define __pmd_to_swp_entry(pmd) ((swp_entry_t) { pmd_val(pmd) })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
+#define __swp_entry_to_pmd(x) ((pmd_t) { (x).val })

#define kern_addr_valid(addr) (1)

--
2.17.0
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