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powerpc: Add pmd_pfn()

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This is straightforward for everything except nohash64 where we
indirect through pmd_page().  There must be a better way to do this.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2022-02-14 10:30:07 -05:00
parent 177bd2a954
commit 9e996c2115
3 changed files with 6 additions and 6 deletions
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4
arch/powerpc/include/asm/book3s/32/pgtable.h
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@@ -372,8 +372,8 @@ static inline void __ptep_set_access_flags(struct vm_area_struct *vma,
#define __HAVE_ARCH_PTE_SAME
#define pte_same(A,B) (((pte_val(A) ^ pte_val(B)) & ~_PAGE_HASHPTE) == 0)
#define pmd_page(pmd) \
pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT)
#define pmd_pfn(pmd) (pmd_val(pmd) >> PAGE_SHIFT)
#define pmd_page(pmd) pfn_to_page(pmd_pfn(pmd))
/*
* Encode and decode a swap entry.