Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 Regents of the University of California
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*/
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#ifndef _ASM_RISCV_PGTABLE_32_H
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#define _ASM_RISCV_PGTABLE_32_H
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#include <asm-generic/pgtable-nopmd.h>
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#include <linux/bits.h>
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#include <linux/const.h>
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/* Size of region mapped by a page global directory */
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#define PGDIR_SHIFT 22
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#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
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#define PGDIR_MASK (~(PGDIR_SIZE - 1))
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#define MAX_POSSIBLE_PHYSMEM_BITS 34
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/*
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* rv32 PTE format:
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* | XLEN-1 10 | 9 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
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* PFN reserved for SW D A G U X W R V
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*/
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#define _PAGE_PFN_MASK GENMASK(31, 10)
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#define _PAGE_NOCACHE 0
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#define _PAGE_IO 0
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#define _PAGE_MTMASK 0
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/* Set of bits to preserve across pte_modify() */
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#define _PAGE_CHG_MASK (~(unsigned long)(_PAGE_PRESENT | _PAGE_READ | \
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_PAGE_WRITE | _PAGE_EXEC | \
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_PAGE_USER | _PAGE_GLOBAL))
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static const __maybe_unused int pgtable_l4_enabled;
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static const __maybe_unused int pgtable_l5_enabled;
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#endif /* _ASM_RISCV_PGTABLE_32_H */
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