diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index 290bc5ac98524450b3d8a92168341355dc5c6a3a..df1921751aa5cc03f9b0b54f1fa559dfc2d64b28 100644
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -263,6 +263,7 @@ static void __init xen_init_capabilities(void)
 	setup_clear_cpu_cap(X86_FEATURE_MTRR);
 	setup_clear_cpu_cap(X86_FEATURE_ACC);
 	setup_clear_cpu_cap(X86_FEATURE_X2APIC);
+	setup_clear_cpu_cap(X86_FEATURE_SME);
 
 	/*
 	 * Xen PV would need some work to support PCID: CR3 handling as well