Most of what it controls is strictly Dom0-only. Exception being the PCI
backend driver, which in principle could also run in a driver domain.

Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -317,7 +317,7 @@ config XEN_AUTO_XLATE
 
 config XEN_ACPI
 	def_bool y
-	depends on X86 && ACPI
+	depends on X86 && ACPI && (XEN_DOM0 || XEN_PCI_STUB)
 
 config XEN_SYMS
 	bool "Xen symbols"