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/* SPDX-License-Identifier: GPL-2.0-only */ /* * AMD Memory Encryption Support * * Copyright (C) 2016 Advanced Micro Devices, Inc. * * Author: Tom Lendacky <thomas.lendacky@amd.com> */ #ifndef __MEM_ENCRYPT_H__ #define __MEM_ENCRYPT_H__ #ifndef __ASSEMBLY__ #ifdef CONFIG_ARCH_HAS_MEM_ENCRYPT #include <asm/mem_encrypt.h> #endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */ #ifdef CONFIG_AMD_MEM_ENCRYPT /* * The __sme_set() and __sme_clr() macros are useful for adding or removing * the encryption mask from a value (e.g. when dealing with pagetable * entries). */ #define __sme_set(x) ((x) | sme_me_mask) #define __sme_clr(x) ((x) & ~sme_me_mask) #else #define __sme_set(x) (x) #define __sme_clr(x) (x) #endif #endif /* __ASSEMBLY__ */ #endif /* __MEM_ENCRYPT_H__ */