496063426d
This easy-to-trigger warning shows up instantly when running Trinity on a kernel with CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS disabled. At most this should have been a printk, but the -EINVAL alone should be more than adequate indicator that something isn't available. Signed-off-by: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
43 lines
877 B
C
43 lines
877 B
C
#ifndef _LINUX_PKEYS_H
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#define _LINUX_PKEYS_H
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#include <linux/mm_types.h>
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#include <asm/mmu_context.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 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 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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