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Mike Rapoport
874e2cc189
Implement primitives necessary for the 4th level folding, add walks of p4d level where appropriate and remove usage of __ARCH_USE_5LEVEL_HACK. Signed-off-by: Mike Rapoport <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Brian Cain <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Christophe Leroy <[email protected]> Cc: Fenghua Yu <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Guan Xuetao <[email protected]> Cc: James Morse <[email protected]> Cc: Jonas Bonn <[email protected]> Cc: Julien Thierry <[email protected]> Cc: Ley Foon Tan <[email protected]> Cc: Marc Zyngier <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Rich Felker <[email protected]> Cc: Russell King <[email protected]> Cc: Stafford Horne <[email protected]> Cc: Stefan Kristiansson <[email protected]> Cc: Suzuki K Poulose <[email protected]> Cc: Tony Luck <[email protected]> Cc: Will Deacon <[email protected]> Cc: Yoshinori Sato <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Linus Torvalds <[email protected]>
25 lines
567 B
C
25 lines
567 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_SH_PGTABLE_2LEVEL_H
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#define __ASM_SH_PGTABLE_2LEVEL_H
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#include <asm-generic/pgtable-nopmd.h>
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/*
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* traditional two-level paging structure
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*/
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#define PAGETABLE_LEVELS 2
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/* PTE bits */
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#define PTE_MAGNITUDE 2 /* 32-bit PTEs */
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#define PTE_SHIFT PAGE_SHIFT
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#define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE)
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/* PGD bits */
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#define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS)
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#define PTRS_PER_PGD (PAGE_SIZE / (1 << PTE_MAGNITUDE))
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#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
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#endif /* __ASM_SH_PGTABLE_2LEVEL_H */
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