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name : trap_pf.h

 /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_TRAP_PF_H
#define _ASM_X86_TRAP_PF_H

/*
 * Page fault error code bits:
 *
 *   bit 0 ==	 0: no page found	1: protection fault
 *   bit 1 ==	 0: read access		1: write access
 *   bit 2 ==	 0: kernel-mode access	1: user-mode access
 *   bit 3 ==				1: use of reserved bit detected
 *   bit 4 ==				1: fault was an instruction fetch
 *   bit 5 ==				1: protection keys block access
 *   bit 6 ==				1: shadow stack access fault
 *   bit 15 ==				1: SGX MMU page-fault
 */
enum x86_pf_error_code {
	X86_PF_PROT	=		1 << 0,
	X86_PF_WRITE	=		1 << 1,
	X86_PF_USER	=		1 << 2,
	X86_PF_RSVD	=		1 << 3,
	X86_PF_INSTR	=		1 << 4,
	X86_PF_PK	=		1 << 5,
	X86_PF_SHSTK	=		1 << 6,
	X86_PF_SGX	=		1 << 15,
};

#endif /* _ASM_X86_TRAP_PF_H */

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