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d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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2 | /* |
3 | * AMD Memory Encryption Support | |
4 | * | |
5 | * Copyright (C) 2016 Advanced Micro Devices, Inc. | |
6 | * | |
7 | * Author: Tom Lendacky <thomas.lendacky@amd.com> | |
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8 | */ |
9 | ||
10 | #ifndef __MEM_ENCRYPT_H__ | |
11 | #define __MEM_ENCRYPT_H__ | |
12 | ||
13 | #ifndef __ASSEMBLY__ | |
14 | ||
15 | #ifdef CONFIG_ARCH_HAS_MEM_ENCRYPT | |
16 | ||
17 | #include <asm/mem_encrypt.h> | |
18 | ||
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19 | #endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */ |
20 | ||
21d9bb4a | 21 | #ifdef CONFIG_AMD_MEM_ENCRYPT |
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22 | /* |
23 | * The __sme_set() and __sme_clr() macros are useful for adding or removing | |
24 | * the encryption mask from a value (e.g. when dealing with pagetable | |
25 | * entries). | |
26 | */ | |
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27 | #define __sme_set(x) ((x) | sme_me_mask) |
28 | #define __sme_clr(x) ((x) & ~sme_me_mask) | |
29 | #else | |
30 | #define __sme_set(x) (x) | |
31 | #define __sme_clr(x) (x) | |
32 | #endif | |
21729f81 | 33 | |
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34 | #endif /* __ASSEMBLY__ */ |
35 | ||
36 | #endif /* __MEM_ENCRYPT_H__ */ |