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arch: Add pmd_pfn() where it is missing

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We need to use this function in common code, so define it for
architectures and/or configrations that miss it.  The result of
pmd_pfn() will only be used if TRANSPARENT_HUGEPAGE is enabled,
but a function or macro called pmd_pfn() must be defined, even
on machines with two level page tables.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
This commit is contained in:
Mike Rapoport
2022-02-04 13:49:20 -05:00
committed by Matthew Wilcox (Oracle)
parent eed05e54d2
commit 7106c51ee9
18 changed files with 24 additions and 1 deletions
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arch/um/include/asm/pgtable.h
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@@ -109,6 +109,7 @@ extern unsigned long end_iomem;
#define p4d_newpage(x) (p4d_val(x) & _PAGE_NEWPAGE)
#define p4d_mkuptodate(x) (p4d_val(x) &= ~_PAGE_NEWPAGE)
#define pmd_pfn(pmd) (pmd_val(pmd) >> PAGE_SHIFT)
#define pmd_page(pmd) phys_to_page(pmd_val(pmd) & PAGE_MASK)
#define pte_page(x) pfn_to_page(pte_pfn(x))