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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2017-10-20 09:30:44 -0500 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-11-07 15:35:54 +0100 |
| commit | d8aa7eea78a1401cce39b3bb61ead0150044a3df (patch) | |
| tree | 8578eb975c77968db7003b83d1c670ff27b35451 /arch/x86/include | |
| parent | 33e63acc119d15c2fac3e3775f32d1ce7a01021b (diff) | |
| download | linux-stable-d8aa7eea78a1401cce39b3bb61ead0150044a3df.tar.gz linux-stable-d8aa7eea78a1401cce39b3bb61ead0150044a3df.tar.bz2 linux-stable-d8aa7eea78a1401cce39b3bb61ead0150044a3df.zip | |
x86/mm: Add Secure Encrypted Virtualization (SEV) support
Provide support for Secure Encrypted Virtualization (SEV). This initial
support defines a flag that is used by the kernel to determine if it is
running with SEV active.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Tested-by: Borislav Petkov <bp@suse.de>
Cc: kvm@vger.kernel.org
Cc: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@kernel.org>
Link: https://lkml.kernel.org/r/20171020143059.3291-3-brijesh.singh@amd.com
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/mem_encrypt.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mem_encrypt.h b/arch/x86/include/asm/mem_encrypt.h index 6a77c63540f7..2b024741bce9 100644 --- a/arch/x86/include/asm/mem_encrypt.h +++ b/arch/x86/include/asm/mem_encrypt.h @@ -47,6 +47,9 @@ void __init mem_encrypt_init(void); void swiotlb_set_mem_attributes(void *vaddr, unsigned long size); +bool sme_active(void); +bool sev_active(void); + #else /* !CONFIG_AMD_MEM_ENCRYPT */ #define sme_me_mask 0ULL @@ -64,6 +67,9 @@ static inline void __init sme_early_init(void) { } static inline void __init sme_encrypt_kernel(void) { } static inline void __init sme_enable(struct boot_params *bp) { } +static inline bool sme_active(void) { return false; } +static inline bool sev_active(void) { return false; } + #endif /* CONFIG_AMD_MEM_ENCRYPT */ /* |