From: Sean Christopherson <sean.j.christopher...@intel.com>

When IA32_FEATURE_CONTROL.SGX_ENABLE and IA32_FEATURE_CONTROL.LOCK are
set by the pre-boot firmware, SGX is usable by the OS.

Signed-off-by: Sean Christopherson <sean.j.christopher...@intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakki...@linux.intel.com>
---
 arch/x86/include/asm/msr-index.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 17f5c12e1afd..b35cb98b5d60 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -435,6 +435,7 @@
 #define FEATURE_CONTROL_LOCKED                         (1<<0)
 #define FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX       (1<<1)
 #define FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX      (1<<2)
+#define FEATURE_CONTROL_SGX_ENABLE                      (1<<18)
 #define FEATURE_CONTROL_LMCE                           (1<<20)
 
 #define MSR_IA32_APICBASE              0x0000001b
-- 
2.14.1

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