forked from Minki/linux
dcf872956d
powerpc has hardware support to disable execute on a pkey. This patch enables the ability to create execute-disabled keys. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
40 lines
1.5 KiB
C
40 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _UAPI_ASM_POWERPC_MMAN_H
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#define _UAPI_ASM_POWERPC_MMAN_H
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#include <asm-generic/mman-common.h>
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#define PROT_SAO 0x10 /* Strong Access Ordering */
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#define MAP_RENAME MAP_ANONYMOUS /* In SunOS terminology */
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#define MAP_NORESERVE 0x40 /* don't reserve swap pages */
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#define MAP_LOCKED 0x80
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#define MAP_GROWSDOWN 0x0100 /* stack-like segment */
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#define MAP_DENYWRITE 0x0800 /* ETXTBSY */
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#define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
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#define MCL_CURRENT 0x2000 /* lock all currently mapped pages */
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#define MCL_FUTURE 0x4000 /* lock all additions to address space */
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#define MCL_ONFAULT 0x8000 /* lock all pages that are faulted in */
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#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
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#define MAP_NONBLOCK 0x10000 /* do not block on IO */
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#define MAP_STACK 0x20000 /* give out an address that is best suited for process/thread stacks */
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#define MAP_HUGETLB 0x40000 /* create a huge page mapping */
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/* Override any generic PKEY permission defines */
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#define PKEY_DISABLE_EXECUTE 0x4
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#undef PKEY_ACCESS_MASK
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#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\
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PKEY_DISABLE_WRITE |\
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PKEY_DISABLE_EXECUTE)
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#endif /* _UAPI_ASM_POWERPC_MMAN_H */
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