1config XEN_BALLOON 2 bool "Xen memory balloon driver" 3 depends on XEN 4 default y 5 help 6 The balloon driver allows the Xen domain to request more memory from 7 the system to expand the domain's memory allocation, or alternatively 8 return unneeded memory to the system. 9 10config XEN_SCRUB_PAGES 11 bool "Scrub pages before returning them to system" 12 depends on XEN_BALLOON 13 default y 14 help 15 Scrub pages before returning them to the system for reuse by 16 other domains. This makes sure that any confidential data 17 is not accidentally visible to other domains. Is it more 18 secure, but slightly less efficient. 19 If in doubt, say yes. 20