diff --git a/xen/arch/x86/acpi/cpu_idle.c b/xen/arch/x86/acpi/cpu_idle.c
index 836f524ef4..5edd1844f4 100644
--- a/xen/arch/x86/acpi/cpu_idle.c
+++ b/xen/arch/x86/acpi/cpu_idle.c
@@ -238,6 +238,8 @@ static void do_get_hw_residencies(void *arg)
     case 0x5F:
     /* Goldmont Plus */
     case 0x7A:
+    /* Tremont */
+    case 0x86:
         GET_PC2_RES(hw_res->pc2);
         GET_PC3_RES(hw_res->pc3);
         GET_PC6_RES(hw_res->pc6);
diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c
index bafc3b30c5..a3c18d4f9d 100644
--- a/xen/arch/x86/hvm/vmx/vmx.c
+++ b/xen/arch/x86/hvm/vmx/vmx.c
@@ -2778,6 +2778,8 @@ static const struct lbr_info *last_branch_msr_get(void)
         case 0x66:
         /* Goldmont Plus */
         case 0x7a:
+        /* Tremont */
+        case 0x86:
         /* Kaby Lake */
         case 0x8e: case 0x9e:
             return sk_lbr;