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>
53 lines
1,016 B
C
53 lines
1,016 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_PKEYS_H
|
|
#define _LINUX_PKEYS_H
|
|
|
|
#include <linux/mm.h>
|
|
|
|
#ifdef CONFIG_ARCH_HAS_PKEYS
|
|
#include <asm/pkeys.h>
|
|
#else /* ! CONFIG_ARCH_HAS_PKEYS */
|
|
#define arch_max_pkey() (1)
|
|
#define execute_only_pkey(mm) (0)
|
|
#define arch_override_mprotect_pkey(vma, prot, pkey) (0)
|
|
#define PKEY_DEDICATED_EXECUTE_ONLY 0
|
|
#define ARCH_VM_PKEY_FLAGS 0
|
|
|
|
static inline int vma_pkey(struct vm_area_struct *vma)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey)
|
|
{
|
|
return (pkey == 0);
|
|
}
|
|
|
|
static inline int mm_pkey_alloc(struct mm_struct *mm)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int mm_pkey_free(struct mm_struct *mm, int pkey)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
|
|
unsigned long init_val)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline bool arch_pkeys_enabled(void)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline void copy_init_pkru_to_fpregs(void)
|
|
{
|
|
}
|
|
|
|
#endif /* ! CONFIG_ARCH_HAS_PKEYS */
|
|
|
|
#endif /* _LINUX_PKEYS_H */
|