mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
e9d1d2bb75
Replace uses of mem_encrypt_active() with calls to cc_platform_has() with the CC_ATTR_MEM_ENCRYPT attribute. Remove the implementation of mem_encrypt_active() across all arches. For s390, since the default implementation of the cc_platform_has() matches the s390 implementation of mem_encrypt_active(), cc_platform_has() does not need to be implemented in s390 (the config option ARCH_HAS_CC_PLATFORM is not set). Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20210928191009.32551-9-bp@alien8.de
36 lines
780 B
C
36 lines
780 B
C
/* 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__ */
|