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Edit File : mman.h \| Size : 1002 B
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note / #ifndef _ASM_X86_MMAN_H #define _ASM_X86_MMAN_H #define MAP_32BIT 0x40 / only give out 32bit addresses / #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS / * Take the 4 protection key bits out of the vma->vm_flags * value and turn them in to the bits that we can put in * to a pte. * * Only override these if Protection Keys are available * (which is only on 64-bit). / #define arch_vm_get_page_prot(vm_flags) __pgprot( \ ((vm_flags) & VM_PKEY_BIT0 ? _PAGE_PKEY_BIT0 : 0) \| \ ((vm_flags) & VM_PKEY_BIT1 ? _PAGE_PKEY_BIT1 : 0) \| \ ((vm_flags) & VM_PKEY_BIT2 ? _PAGE_PKEY_BIT2 : 0) \| \ ((vm_flags) & VM_PKEY_BIT3 ? _PAGE_PKEY_BIT3 : 0)) #define arch_calc_vm_prot_bits(prot, key) ( \ ((key) & 0x1 ? VM_PKEY_BIT0 : 0) \| \ ((key) & 0x2 ? VM_PKEY_BIT1 : 0) \| \ ((key) & 0x4 ? VM_PKEY_BIT2 : 0) \| \ ((key) & 0x8 ? VM_PKEY_BIT3 : 0)) #endif #include <asm-generic/mman.h> #endif / _ASM_X86_MMAN_H */ Back

Edit File : mman.h | Size : 1002 B

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _ASM_X86_MMAN_H
#define _ASM_X86_MMAN_H

#define MAP_32BIT	0x40		/* only give out 32bit addresses */

#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
/*
 * Take the 4 protection key bits out of the vma->vm_flags
 * value and turn them in to the bits that we can put in
 * to a pte.
 *
 * Only override these if Protection Keys are available
 * (which is only on 64-bit).
 */
#define arch_vm_get_page_prot(vm_flags)	__pgprot(	\
		((vm_flags) & VM_PKEY_BIT0 ? _PAGE_PKEY_BIT0 : 0) |	\
		((vm_flags) & VM_PKEY_BIT1 ? _PAGE_PKEY_BIT1 : 0) |	\
		((vm_flags) & VM_PKEY_BIT2 ? _PAGE_PKEY_BIT2 : 0) |	\
		((vm_flags) & VM_PKEY_BIT3 ? _PAGE_PKEY_BIT3 : 0))

#define arch_calc_vm_prot_bits(prot, key) (		\
		((key) & 0x1 ? VM_PKEY_BIT0 : 0) |      \
		((key) & 0x2 ? VM_PKEY_BIT1 : 0) |      \
		((key) & 0x4 ? VM_PKEY_BIT2 : 0) |      \
		((key) & 0x8 ? VM_PKEY_BIT3 : 0))
#endif

#include <asm-generic/mman.h>

#endif /* _ASM_X86_MMAN_H */

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