From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/arch/x86/include/asm/mem_encrypt.h | 31 ++++++++++++++++++++++++-------
1 files changed, 24 insertions(+), 7 deletions(-)
diff --git a/kernel/arch/x86/include/asm/mem_encrypt.h b/kernel/arch/x86/include/asm/mem_encrypt.h
index 616f8e6..4406d58 100644
--- a/kernel/arch/x86/include/asm/mem_encrypt.h
+++ b/kernel/arch/x86/include/asm/mem_encrypt.h
@@ -1,13 +1,10 @@
+/* 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>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#ifndef __X86_MEM_ENCRYPT_H__
@@ -16,12 +13,14 @@
#ifndef __ASSEMBLY__
#include <linux/init.h>
+#include <linux/cc_platform.h>
#include <asm/bootparam.h>
#ifdef CONFIG_AMD_MEM_ENCRYPT
extern u64 sme_me_mask;
+extern u64 sev_status;
extern bool sev_enabled;
void sme_encrypt_execute(unsigned long encrypted_kernel_vaddr,
@@ -46,14 +45,16 @@
int __init early_set_memory_decrypted(unsigned long vaddr, unsigned long size);
int __init early_set_memory_encrypted(unsigned long vaddr, unsigned long size);
-/* Architecture __weak replacement functions */
-void __init mem_encrypt_init(void);
void __init mem_encrypt_free_decrypted_mem(void);
+void __init sev_es_init_vc_handling(void);
bool sme_active(void);
bool sev_active(void);
+bool sev_es_active(void);
-#define __bss_decrypted __attribute__((__section__(".bss..decrypted")))
+void __init mem_encrypt_init(void);
+
+#define __bss_decrypted __section(".bss..decrypted")
#else /* !CONFIG_AMD_MEM_ENCRYPT */
@@ -72,13 +73,19 @@
static inline void __init sme_encrypt_kernel(struct boot_params *bp) { }
static inline void __init sme_enable(struct boot_params *bp) { }
+static inline void sev_es_init_vc_handling(void) { }
static inline bool sme_active(void) { return false; }
static inline bool sev_active(void) { return false; }
+static inline bool sev_es_active(void) { return false; }
static inline int __init
early_set_memory_decrypted(unsigned long vaddr, unsigned long size) { return 0; }
static inline int __init
early_set_memory_encrypted(unsigned long vaddr, unsigned long size) { return 0; }
+
+static inline void mem_encrypt_free_decrypted_mem(void) { }
+
+static inline void mem_encrypt_init(void) { }
#define __bss_decrypted
@@ -95,6 +102,16 @@
extern char __start_bss_decrypted[], __end_bss_decrypted[], __start_bss_decrypted_unused[];
+static inline bool mem_encrypt_active(void)
+{
+ return sme_me_mask;
+}
+
+static inline u64 sme_get_me_mask(void)
+{
+ return sme_me_mask;
+}
+
#endif /* __ASSEMBLY__ */
#endif /* __X86_MEM_ENCRYPT_H__ */
--
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