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4414ef9536
Add an empty arch_pkeys_enabled() in linux/pkeys.h for the CONFIG_ARCH_HAS_PKEYS=n case. Split out of a patch by Ram Pai <linuxram@us.ibm.com>. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Dave Hansen <dave.hansen@intel.com>
54 lines
1016 B
C
54 lines
1016 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_PKEYS_H
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#define _LINUX_PKEYS_H
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#include <linux/mm.h>
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#ifdef CONFIG_ARCH_HAS_PKEYS
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#include <asm/pkeys.h>
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#else /* ! CONFIG_ARCH_HAS_PKEYS */
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#define arch_max_pkey() (1)
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#define execute_only_pkey(mm) (0)
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#define arch_override_mprotect_pkey(vma, prot, pkey) (0)
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#define PKEY_DEDICATED_EXECUTE_ONLY 0
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#define ARCH_VM_PKEY_FLAGS 0
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static inline int vma_pkey(struct vm_area_struct *vma)
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{
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return 0;
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}
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static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey)
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{
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return (pkey == 0);
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}
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static inline int mm_pkey_alloc(struct mm_struct *mm)
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{
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return -1;
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}
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static inline int mm_pkey_free(struct mm_struct *mm, int pkey)
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{
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return -EINVAL;
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}
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static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
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unsigned long init_val)
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{
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return 0;
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}
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static inline bool arch_pkeys_enabled(void)
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{
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return false;
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}
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static inline void copy_init_pkru_to_fpregs(void)
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{
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}
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#endif /* ! CONFIG_ARCH_HAS_PKEYS */
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#endif /* _LINUX_PKEYS_H */
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