powerpc/mm/radix: Document software bits for radix
Add #defines for Power ISA 3.0 software defined bits. 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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/*
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* Software bits
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*/
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#define _RPAGE_SW0 0x2000000000000000UL
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#define _RPAGE_SW1 0x00800
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#define _RPAGE_SW2 0x00400
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#define _RPAGE_SW3 0x00200
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#ifdef CONFIG_MEM_SOFT_DIRTY
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#define _PAGE_SOFT_DIRTY 0x00200 /* software: software dirty tracking */
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#define _PAGE_SOFT_DIRTY _RPAGE_SW3 /* software: software dirty tracking */
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#else
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#define _PAGE_SOFT_DIRTY 0x00000
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#endif
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#define _PAGE_SPECIAL 0x00400 /* software: special page */
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#define _PAGE_SPECIAL _RPAGE_SW2 /* software: special page */
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#define _PAGE_PTE (1ul << 62) /* distinguishes PTEs from pointers */
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