linux/arch/x86/include/asm/trap_pf.h

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

#include <linux/bits.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
 *   bit 31 ==				1: fault was due to RMP violation
 */
enum x86_pf_error_code { … };

#endif /* _ASM_X86_TRAP_PF_H */