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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.

7
arch/powerpc/include/asm/nohash/32/pgtable.h
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@ -349,15 +349,14 @@ static inline int pte_young(pte_t pte)
* of the pte page. -- paulus
*/
#ifndef CONFIG_BOOKE
#define pmd_page(pmd) \
pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT)
#define pmd_pfn(pmd) (pmd_val(pmd) >> PAGE_SHIFT)
#else
#define pmd_page_vaddr(pmd) \
((unsigned long)(pmd_val(pmd) & ~(PTE_TABLE_SIZE - 1)))
#define pmd_page(pmd) \
pfn_to_page((__pa(pmd_val(pmd)) >> PAGE_SHIFT))
#define pmd_pfn(pmd) (__pa(pmd_val(pmd)) >> PAGE_SHIFT)
#endif
#define pmd_page(pmd) pfn_to_page(pmd_pfn(pmd))
/*
* Encode and decode a swap entry.
* Note that the bits we use in a PTE for representing a swap entry

1
arch/powerpc/include/asm/nohash/64/pgtable.h
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@ -142,6 +142,7 @@ static inline pte_t pmd_pte(pmd_t pmd)
#define pmd_present(pmd) (!pmd_none(pmd))
#define pmd_page_vaddr(pmd) (pmd_val(pmd) & ~PMD_MASKED_BITS)
extern struct page *pmd_page(pmd_t pmd);
#define pmd_pfn(pmd) (page_to_pfn(pmd_page(pmd)))
static inline void pud_set(pud_t *pudp, unsigned long val)
{