diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index baf6d13fe705..6f03badfef71 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -154,6 +154,8 @@
 #define X86_FEATURE_RNG2_EN		( 5*32+23) /* "rng2_en" RNG2 enabled */
 #define X86_FEATURE_PHE2		( 5*32+25) /* "phe2" PadLock Hash Engine v2 */
 #define X86_FEATURE_PHE2_EN		( 5*32+26) /* "phe2_en" PHE2 enabled */
+#define X86_FEATURE_RSA			( 5*32+27) /* "rsa" Big-number arithmetic */
+#define X86_FEATURE_RSA_EN		( 5*32+28) /* "rsa_en" RSA enabled */
 
 /* More extended AMD flags: CPUID level 0x80000001, ECX, word 6 */
 #define X86_FEATURE_LAHF_LM		( 6*32+ 0) /* "lahf_lm" LAHF/SAHF in long mode */
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 9313262bafc0..9e9cf6538a96 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -1291,6 +1291,8 @@ void kvm_initialize_cpu_caps(void)
 		F(RNG2_EN),
 		F(PHE2),
 		F(PHE2_EN),
+		F(RSA),
+		F(RSA_EN),
 	);
 
 	/*