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Linux kernel mirror (for testing)
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PAGE_PTR() had been last used outside of arch/* in 1.1.94
.. and in arch/* - circa 2.2.7.
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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arch/alpha/include/asm/pgtable.h
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arch/alpha/include/asm/pgtable.h
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#define BAD_PAGE __bad_page()
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#define ZERO_PAGE(vaddr) (virt_to_page(ZERO_PGE))
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/* number of bits that fit into a memory pointer */
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#define BITS_PER_PTR (8*sizeof(unsigned long))
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/* to align the pointer to a pointer address */
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#define PTR_MASK (~(sizeof(void*)-1))
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/* sizeof(void*)==1<<SIZEOF_PTR_LOG2 */
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#define SIZEOF_PTR_LOG2 3
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/* to find an entry in a page-table */
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#define PAGE_PTR(address) \
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((unsigned long)(address)>>(PAGE_SHIFT-SIZEOF_PTR_LOG2)&PTR_MASK&~PAGE_MASK)
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/*
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* On certain platforms whose physical address space can overlap KSEG,
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* namely EV6 and above, we must re-twiddle the physaddr to restore the
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arch/m68k/include/asm/pgtable_mm.h
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arch/m68k/include/asm/pgtable_mm.h
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*/
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#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
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/* number of bits that fit into a memory pointer */
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#define BITS_PER_PTR (8*sizeof(unsigned long))
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/* to align the pointer to a pointer address */
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#define PTR_MASK (~(sizeof(void*)-1))
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/* sizeof(void*)==1<<SIZEOF_PTR_LOG2 */
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/* 64-bit machines, beware! SRB. */
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#define SIZEOF_PTR_LOG2 2
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extern void kernel_set_cachemode(void *addr, unsigned long size, int cmode);
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/*
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arch/openrisc/include/asm/pgtable.h
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arch/openrisc/include/asm/pgtable.h
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extern unsigned long empty_zero_page[2048];
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#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
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/* number of bits that fit into a memory pointer */
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#define BITS_PER_PTR (8*sizeof(unsigned long))
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/* to align the pointer to a pointer address */
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#define PTR_MASK (~(sizeof(void *)-1))
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/* sizeof(void*)==1<<SIZEOF_PTR_LOG2 */
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/* 64-bit machines, beware! SRB. */
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#define SIZEOF_PTR_LOG2 2
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/* to find an entry in a page-table */
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#define PAGE_PTR(address) \
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((unsigned long)(address)>>(PAGE_SHIFT-SIZEOF_PTR_LOG2)&PTR_MASK&~PAGE_MASK)
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/* to set the page-dir */
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#define SET_PAGE_DIR(tsk, pgdir)
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