pgtable-masks.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_POWERPC_PGTABLE_MASKS_H
 3#define _ASM_POWERPC_PGTABLE_MASKS_H
 4
 5#ifndef _PAGE_NA
 6#define _PAGE_NA	0
 7#define _PAGE_NAX	_PAGE_EXEC
 8#define _PAGE_RO	_PAGE_READ
 9#define _PAGE_ROX	(_PAGE_READ | _PAGE_EXEC)
10#define _PAGE_RW	(_PAGE_READ | _PAGE_WRITE)
11#define _PAGE_RWX	(_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC)
12#endif
13
14/* Permission flags for kernel mappings */
15#ifndef _PAGE_KERNEL_RO
16#define _PAGE_KERNEL_RO		_PAGE_RO
17#define _PAGE_KERNEL_ROX	_PAGE_ROX
18#define _PAGE_KERNEL_RW		(_PAGE_RW | _PAGE_DIRTY)
19#define _PAGE_KERNEL_RWX	(_PAGE_RWX | _PAGE_DIRTY)
20#endif
21
22/* Permission masks used to generate the __P and __S table */
23#define PAGE_NONE	__pgprot(_PAGE_BASE | _PAGE_NA)
24#define PAGE_EXECONLY_X	__pgprot(_PAGE_BASE | _PAGE_NAX)
25#define PAGE_SHARED	__pgprot(_PAGE_BASE | _PAGE_RW)
26#define PAGE_SHARED_X	__pgprot(_PAGE_BASE | _PAGE_RWX)
27#define PAGE_COPY	__pgprot(_PAGE_BASE | _PAGE_RO)
28#define PAGE_COPY_X	__pgprot(_PAGE_BASE | _PAGE_ROX)
29#define PAGE_READONLY	__pgprot(_PAGE_BASE | _PAGE_RO)
30#define PAGE_READONLY_X	__pgprot(_PAGE_BASE | _PAGE_ROX)
31
32#endif /* _ASM_POWERPC_PGTABLE_MASKS_H */