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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 <[email protected]>
- */
- #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__ */
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