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authorTom Lendacky <thomas.lendacky@amd.com>2017-10-20 09:30:44 -0500
committerThomas Gleixner <tglx@linutronix.de>2017-11-07 15:35:54 +0100
commitd8aa7eea78a1401cce39b3bb61ead0150044a3df (patch)
tree8578eb975c77968db7003b83d1c670ff27b35451 /include/linux/mem_encrypt.h
parent33e63acc119d15c2fac3e3775f32d1ce7a01021b (diff)
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 'include/linux/mem_encrypt.h')
-rw-r--r--include/linux/mem_encrypt.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/mem_encrypt.h b/include/linux/mem_encrypt.h
index 265a9cd21cb4..b310a9c18113 100644
--- a/include/linux/mem_encrypt.h
+++ b/include/linux/mem_encrypt.h
@@ -23,11 +23,14 @@
#define sme_me_mask 0ULL
+static inline bool sme_active(void) { return false; }
+static inline bool sev_active(void) { return false; }
+
#endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */
-static inline bool sme_active(void)
+static inline bool mem_encrypt_active(void)
{
- return !!sme_me_mask;
+ return sme_me_mask;
}
static inline u64 sme_get_me_mask(void)