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powerpc/mm: Add virt_to_pfn and use this instead of opencoding
This add helper virt_to_pfn and remove the opencoded usage of the same. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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1 changed files with 3 additions and 2 deletions
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@ -127,9 +127,10 @@ extern long long virt_phys_offset;
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#define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && (pfn) < max_mapnr)
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#endif
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#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
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#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
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#define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
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#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
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#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
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#define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr))
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/*
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* On Book-E parts we need __va to parse the device tree and we can't
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