Commit 33fc259a authored Jun 10, 2016 by Linus Torvalds

linux

Pull arm64 fix from Will Deacon:
 "A fix for an issue that Alex saw whilst swapping with hardware
  access/dirty bit support enabled in the kernel: Fix a failure to fault
  in old pages on a write when CONFIG_ARM64_HW_AFDBM is enabled"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: always take dirty state from new pte in ptep_set_access_flags

parents 75d089d1 0106d456

arch/arm64/mm/fault.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -109,7 +109,7 @@ int ptep_set_access_flags(struct vm_area_struct *vma,
		* PTE_RDONLY is cleared by default in the asm below, so set it in
		* back if necessary (read-only or clean PTE).
		*/
		if (!pte_write(entry) \|\| !dirty)
		if (!pte_write(entry) \|\| !pte_sw_dirty(entry))
		pte_val(entry) \|= PTE_RDONLY;

		/*

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