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 21config XENFS 22 tristate "Xen filesystem" 23 depends on XEN 24 default y 25 help 26 The xen filesystem provides a way for domains to share 27 information with each other and with the hypervisor. 28 For example, by reading and writing the "xenbus" file, guests 29 may pass arbitrary information to the initial domain. 30 If in doubt, say yes. 31 32config XEN_COMPAT_XENFS 33 bool "Create compatibility mount point /proc/xen" 34 depends on XENFS 35 default y 36 help 37 The old xenstore userspace tools expect to find "xenbus" 38 under /proc/xen, but "xenbus" is now found at the root of the 39 xenfs filesystem. Selecting this causes the kernel to create 40 the compatibility mount point /proc/xen if it is running on 41 a xen platform. 42 If in doubt, say yes. 43 44