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powerpc/ppc32: Fixup pmd_page to work when ARCH_PFN_OFFSET is non-zero
Instead of referencing mem_map directly, use pfn_to_page. Otherwise the kernel crashes when trying to start userspace if ARCH_PFN_OFFSET is non-zero and CONFIG_BOOKE is not defined Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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@ -287,7 +287,7 @@ static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry)
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#define pmd_page_vaddr(pmd) \
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((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
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#define pmd_page(pmd) \
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(mem_map + (pmd_val(pmd) >> PAGE_SHIFT))
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pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT)
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#else
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#define pmd_page_vaddr(pmd) \
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((unsigned long) (pmd_val(pmd) & PAGE_MASK))
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