Index: sys/x86/include/specialreg.h
===================================================================
--- sys/x86/include/specialreg.h
+++ sys/x86/include/specialreg.h
@@ -1071,6 +1071,7 @@
 #define	MSR_VM_HSAVE_PA 0xc0010117	/* SVM: host save area address */
 #define	MSR_AMD_CPUID07	0xc0011002	/* CPUID 07 %ebx override */
 #define	MSR_EXTFEATURES	0xc0011005	/* Extended CPUID Features override */
+#define	MSR_AMD_LS_CFG	0xc0011020
 #define	MSR_IC_CFG	0xc0011021	/* Instruction Cache Configuration */
 
 /* MSR_VM_CR related */
Index: usr.sbin/bhyve/xmsr.c
===================================================================
--- usr.sbin/bhyve/xmsr.c
+++ usr.sbin/bhyve/xmsr.c
@@ -89,6 +89,10 @@
 			/* Ignore writes to the PerfCtr MSRs */
 			return (0);
 
+		case MSR_AMD_LS_CFG:
+			/* Ignore writes to the Errata MSRs */
+			return (0);
+				
 		case MSR_P_STATE_CONTROL:
 			/* Ignore write to change the P-state */
 			return (0);