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a3286f05bc
In preparation for the following patch which will enhance 'slices' for supporting PPC32 in order to fix an issue on hugepages on 8xx, this patch takes out of page*.h all bits related to 'slices' and put them into newly created slice.h header files. While common parts go into asm/slice.h, subarch specific parts go into respective books3s/64/slice.c and nohash/64/slice.c 'slices' Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
27 lines
841 B
C
27 lines
841 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_POWERPC_BOOK3S_64_SLICE_H
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#define _ASM_POWERPC_BOOK3S_64_SLICE_H
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#ifdef CONFIG_PPC_MM_SLICES
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#define SLICE_LOW_SHIFT 28
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#define SLICE_LOW_TOP (0x100000000ul)
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#define SLICE_NUM_LOW (SLICE_LOW_TOP >> SLICE_LOW_SHIFT)
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#define GET_LOW_SLICE_INDEX(addr) ((addr) >> SLICE_LOW_SHIFT)
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#define SLICE_HIGH_SHIFT 40
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#define SLICE_NUM_HIGH (H_PGTABLE_RANGE >> SLICE_HIGH_SHIFT)
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#define GET_HIGH_SLICE_INDEX(addr) ((addr) >> SLICE_HIGH_SHIFT)
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#else /* CONFIG_PPC_MM_SLICES */
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#define get_slice_psize(mm, addr) ((mm)->context.user_psize)
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#define slice_set_user_psize(mm, psize) \
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do { \
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(mm)->context.user_psize = (psize); \
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(mm)->context.sllp = SLB_VSID_USER | mmu_psize_defs[(psize)].sllp; \
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} while (0)
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#endif /* CONFIG_PPC_MM_SLICES */
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#endif /* _ASM_POWERPC_BOOK3S_64_SLICE_H */
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