diff --git a/sys/x86/include/specialreg.h b/sys/x86/include/specialreg.h
index e88a4d7915fb..b5274b29ca3c 100644
--- a/sys/x86/include/specialreg.h
+++ b/sys/x86/include/specialreg.h
@@ -342,15 +342,20 @@
 #define	CPUID_STDEXT_RTM	0x00000800
 #define	CPUID_STDEXT_MPX	0x00004000
 #define	CPUID_STDEXT_AVX512F	0x00010000
+#define	CPUID_STDEXT_AVX512DQ	0x00020000
 #define	CPUID_STDEXT_RDSEED	0x00040000
 #define	CPUID_STDEXT_ADX	0x00080000
 #define	CPUID_STDEXT_SMAP	0x00100000
+#define	CPUID_STDEXT_AVX512IFMA	0x00200000
+#define	CPUID_STDEXT_PCOMMIT	0x00400000
 #define	CPUID_STDEXT_CLFLUSHOPT	0x00800000
+#define	CPUID_STDEXT_CLWB	0x01000000
 #define	CPUID_STDEXT_PROCTRACE	0x02000000
 #define	CPUID_STDEXT_AVX512PF	0x04000000
 #define	CPUID_STDEXT_AVX512ER	0x08000000
 #define	CPUID_STDEXT_AVX512CD	0x10000000
 #define	CPUID_STDEXT_SHA	0x20000000
+#define	CPUID_STDEXT_AVX512BW	0x40000000
 
 /*
  * CPUID manufacturers identifiers