ef7d0f5d03
Making virt_to_pfn() a static inline taking a strongly typed (const void *) makes the contract of a passing a pointer of that type to the function explicit and exposes any misuse of the macro virt_to_pfn() acting polymorphic and accepting many types such as (void *), (unitptr_t) or (unsigned long) as arguments without warnings. For symmetry, do the same with pfn_to_virt(). Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _M68K_PAGE_NO_H
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#define _M68K_PAGE_NO_H
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#ifndef __ASSEMBLY__
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extern unsigned long memory_start;
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extern unsigned long memory_end;
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#define clear_page(page) memset((page), 0, PAGE_SIZE)
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#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
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#define clear_user_page(page, vaddr, pg) clear_page(page)
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#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
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#define vma_alloc_zeroed_movable_folio(vma, vaddr) \
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vma_alloc_folio(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, 0, vma, vaddr, false)
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#define __pa(vaddr) ((unsigned long)(vaddr))
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#define __va(paddr) ((void *)((unsigned long)(paddr)))
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static inline unsigned long virt_to_pfn(const void *kaddr)
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{
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return __pa(kaddr) >> PAGE_SHIFT;
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}
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static inline void *pfn_to_virt(unsigned long pfn)
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{
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return __va(pfn << PAGE_SHIFT);
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}
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#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
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#define page_to_virt(page) __va(((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET))
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#define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET) && \
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((unsigned long)(kaddr) < memory_end))
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#define ARCH_PFN_OFFSET PHYS_PFN(PAGE_OFFSET_RAW)
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#endif /* __ASSEMBLY__ */
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#endif /* _M68K_PAGE_NO_H */
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