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Current File : /proc/self/root/usr/src/linux-headers-6.8.0-45/arch/powerpc/include/asm/mman.h
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 */
#ifndef _ASM_POWERPC_MMAN_H
#define _ASM_POWERPC_MMAN_H

#include <uapi/asm/mman.h>

#ifdef CONFIG_PPC64

#include <asm/cputable.h>
#include <linux/mm.h>
#include <linux/pkeys.h>
#include <asm/cpu_has_feature.h>
#include <asm/firmware.h>

static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot,
		unsigned long pkey)
{
#ifdef CONFIG_PPC_MEM_KEYS
	return (((prot & PROT_SAO) ? VM_SAO : 0) | pkey_to_vmflag_bits(pkey));
#else
	return ((prot & PROT_SAO) ? VM_SAO : 0);
#endif
}
#define arch_calc_vm_prot_bits(prot, pkey) arch_calc_vm_prot_bits(prot, pkey)

static inline bool arch_validate_prot(unsigned long prot, unsigned long addr)
{
	if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO))
		return false;
	if (prot & PROT_SAO) {
		if (!cpu_has_feature(CPU_FTR_SAO))
			return false;
		if (firmware_has_feature(FW_FEATURE_LPAR) &&
		    !IS_ENABLED(CONFIG_PPC_PROT_SAO_LPAR))
			return false;
	}
	return true;
}
#define arch_validate_prot arch_validate_prot

#endif /* CONFIG_PPC64 */
#endif	/* _ASM_POWERPC_MMAN_H */

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