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>
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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*/
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#ifndef _ASM_POWERPC_MMAN_H
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#define _ASM_POWERPC_MMAN_H
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#include <uapi/asm/mman.h>
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#if defined(CONFIG_PPC64) && !defined(BUILD_VDSO)
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#include <asm/cputable.h>
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#include <linux/mm.h>
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#include <linux/pkeys.h>
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#include <asm/cpu_has_feature.h>
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#include <asm/firmware.h>
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static inline vm_flags_t arch_calc_vm_prot_bits(unsigned long prot,
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unsigned long pkey)
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{
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#ifdef CONFIG_PPC_MEM_KEYS
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return (((prot & PROT_SAO) ? VM_SAO : 0) | pkey_to_vmflag_bits(pkey));
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#else
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return ((prot & PROT_SAO) ? VM_SAO : 0);
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#endif
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}
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#define arch_calc_vm_prot_bits(prot, pkey) arch_calc_vm_prot_bits(prot, pkey)
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static inline bool arch_validate_prot(unsigned long prot, unsigned long addr)
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{
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if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO))
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return false;
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if (prot & PROT_SAO) {
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if (!cpu_has_feature(CPU_FTR_SAO))
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return false;
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if (firmware_has_feature(FW_FEATURE_LPAR) &&
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!IS_ENABLED(CONFIG_PPC_PROT_SAO_LPAR))
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return false;
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}
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return true;
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}
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#define arch_validate_prot arch_validate_prot
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#endif /* CONFIG_PPC64 */
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#endif /* _ASM_POWERPC_MMAN_H */
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