cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pkeys.h (990B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _LINUX_PKEYS_H
      3#define _LINUX_PKEYS_H
      4
      5#include <linux/mm.h>
      6
      7#define ARCH_DEFAULT_PKEY	0
      8
      9#ifdef CONFIG_ARCH_HAS_PKEYS
     10#include <asm/pkeys.h>
     11#else /* ! CONFIG_ARCH_HAS_PKEYS */
     12#define arch_max_pkey() (1)
     13#define execute_only_pkey(mm) (0)
     14#define arch_override_mprotect_pkey(vma, prot, pkey) (0)
     15#define PKEY_DEDICATED_EXECUTE_ONLY 0
     16#define ARCH_VM_PKEY_FLAGS 0
     17
     18static inline int vma_pkey(struct vm_area_struct *vma)
     19{
     20	return 0;
     21}
     22
     23static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey)
     24{
     25	return (pkey == 0);
     26}
     27
     28static inline int mm_pkey_alloc(struct mm_struct *mm)
     29{
     30	return -1;
     31}
     32
     33static inline int mm_pkey_free(struct mm_struct *mm, int pkey)
     34{
     35	return -EINVAL;
     36}
     37
     38static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
     39			unsigned long init_val)
     40{
     41	return 0;
     42}
     43
     44static inline bool arch_pkeys_enabled(void)
     45{
     46	return false;
     47}
     48
     49#endif /* ! CONFIG_ARCH_HAS_PKEYS */
     50
     51#endif /* _LINUX_PKEYS_H */