Contributors: 16
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Tom Lendacky |
268 |
58.77% |
11 |
37.93% |
| Brijesh Singh |
76 |
16.67% |
2 |
6.90% |
| Andi Kleen |
20 |
4.39% |
1 |
3.45% |
| Ashish Kalra |
19 |
4.17% |
1 |
3.45% |
| FUJITA Tomonori |
16 |
3.51% |
1 |
3.45% |
| Thomas Gleixner |
14 |
3.07% |
3 |
10.34% |
| Alexander Shishkin |
8 |
1.75% |
1 |
3.45% |
| Benjamin Thiel |
7 |
1.54% |
1 |
3.45% |
| Steve Rutherford |
6 |
1.32% |
1 |
3.45% |
| Yinghai Lu |
5 |
1.10% |
1 |
3.45% |
| Michael Kelley |
4 |
0.88% |
1 |
3.45% |
| Joerg Roedel |
4 |
0.88% |
1 |
3.45% |
| Borislav Petkov |
3 |
0.66% |
1 |
3.45% |
| Thiago Jung Bauermann |
3 |
0.66% |
1 |
3.45% |
| Anshuman Khandual |
2 |
0.44% |
1 |
3.45% |
| Joe Perches |
1 |
0.22% |
1 |
3.45% |
| Total |
456 |
|
29 |
|
/* 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 __X86_MEM_ENCRYPT_H__
#define __X86_MEM_ENCRYPT_H__
#ifndef __ASSEMBLY__
#include <linux/init.h>
#include <linux/cc_platform.h>
#include <asm/bootparam.h>
#ifdef CONFIG_X86_MEM_ENCRYPT
void __init mem_encrypt_init(void);
void __init mem_encrypt_setup_arch(void);
#else
static inline void mem_encrypt_init(void) { }
static inline void __init mem_encrypt_setup_arch(void) { }
#endif
#ifdef CONFIG_AMD_MEM_ENCRYPT
extern u64 sme_me_mask;
extern u64 sev_status;
void sme_encrypt_execute(unsigned long encrypted_kernel_vaddr,
unsigned long decrypted_kernel_vaddr,
unsigned long kernel_len,
unsigned long encryption_wa,
unsigned long encryption_pgd);
void __init sme_early_encrypt(resource_size_t paddr,
unsigned long size);
void __init sme_early_decrypt(resource_size_t paddr,
unsigned long size);
void __init sme_map_bootdata(char *real_mode_data);
void __init sme_unmap_bootdata(char *real_mode_data);
void __init sme_early_init(void);
void __init sme_encrypt_kernel(struct boot_params *bp);
void __init sme_enable(struct boot_params *bp);
int __init early_set_memory_decrypted(unsigned long vaddr, unsigned long size);
int __init early_set_memory_encrypted(unsigned long vaddr, unsigned long size);
void __init early_set_mem_enc_dec_hypercall(unsigned long vaddr,
unsigned long size, bool enc);
void __init mem_encrypt_free_decrypted_mem(void);
void __init sev_es_init_vc_handling(void);
#define __bss_decrypted __section(".bss..decrypted")
#else /* !CONFIG_AMD_MEM_ENCRYPT */
#define sme_me_mask 0ULL
#define sev_status 0ULL
static inline void __init sme_early_encrypt(resource_size_t paddr,
unsigned long size) { }
static inline void __init sme_early_decrypt(resource_size_t paddr,
unsigned long size) { }
static inline void __init sme_map_bootdata(char *real_mode_data) { }
static inline void __init sme_unmap_bootdata(char *real_mode_data) { }
static inline void __init sme_early_init(void) { }
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 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 __init
early_set_mem_enc_dec_hypercall(unsigned long vaddr, unsigned long size, bool enc) {}
static inline void mem_encrypt_free_decrypted_mem(void) { }
#define __bss_decrypted
#endif /* CONFIG_AMD_MEM_ENCRYPT */
void add_encrypt_protection_map(void);
/*
* The __sme_pa() and __sme_pa_nodebug() macros are meant for use when
* writing to or comparing values from the cr3 register. Having the
* encryption mask set in cr3 enables the PGD entry to be encrypted and
* avoid special case handling of PGD allocations.
*/
#define __sme_pa(x) (__pa(x) | sme_me_mask)
#define __sme_pa_nodebug(x) (__pa_nodebug(x) | sme_me_mask)
extern char __start_bss_decrypted[], __end_bss_decrypted[], __start_bss_decrypted_unused[];
static inline u64 sme_get_me_mask(void)
{
return sme_me_mask;
}
#endif /* __ASSEMBLY__ */
#endif /* __X86_MEM_ENCRYPT_H__ */