[RFC,1/9] arc: mm: migrate: add pmd swap entry to support thp migration.

Message ID 20180426142804.180152-2-zi.yan@sent.com
State New
Headers show
Series
  • Enable THP migration for all possible architectures
Related show

Commit Message

Zi Yan April 26, 2018, 2:27 p.m.
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(+)

Patch

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)