[PATCH v21 04/28] x86/cpufeatures: Add Intel-defined SGX_LC feature bit

[Jarkko Sakkinen]

From: Kai Huang <kai.huang@xxxxxxxxxxxxxxx>

X86_FEATURE_SGX_LC reflects whether or not the CPU supports SGX Launch
Control, i.e. enumerates the existence of IA32_FEATURE_CONTROL's
SGX_LE_WR bit and the IA32_SGXLEPUBKEYHASH MSRs.

Signed-off-by: Kai Huang <kai.huang@xxxxxxxxxxxxxxx>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
---
 arch/x86/include/asm/cpufeatures.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index c5582e766121..ca82226e25ec 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -355,6 +355,7 @@
 #define X86_FEATURE_CLDEMOTE		(16*32+25) /* CLDEMOTE instruction */
 #define X86_FEATURE_MOVDIRI		(16*32+27) /* MOVDIRI instruction */
 #define X86_FEATURE_MOVDIR64B		(16*32+28) /* MOVDIR64B instruction */
+#define X86_FEATURE_SGX_LC		(16*32+30) /* Software Guard Extensions Launch Control */
 
 /* AMD-defined CPU features, CPUID level 0x80000007 (EBX), word 17 */
 #define X86_FEATURE_OVERFLOW_RECOV	(17*32+ 0) /* MCA overflow recovery support */
-- 
2.20.1