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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2023 Arm Ltd.
*/
#ifndef _ASM_ARM64_POR_H
#define _ASM_ARM64_POR_H
#define POR_BITS_PER_PKEY 4
#define POR_ELx_IDX(por_elx, idx) (((por_elx) >> ((idx) * POR_BITS_PER_PKEY)) & 0xf)
static inline bool por_elx_allows_read(u64 por, u8 pkey)
{
u8 perm = POR_ELx_IDX(por, pkey);
return perm & POE_R;
}
static inline bool por_elx_allows_write(u64 por, u8 pkey)
{
u8 perm = POR_ELx_IDX(por, pkey);
return perm & POE_W;
}
static inline bool por_elx_allows_exec(u64 por, u8 pkey)
{
u8 perm = POR_ELx_IDX(por, pkey);
return perm & POE_X;
}
#endif /* _ASM_ARM64_POR_H */
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