LXR linux/drivers/xen/Kconfig

   1menu "Xen driver support"
   2        depends on XEN
   3
   4config XEN_BALLOON
   5        bool "Xen memory balloon driver"
   6        default y
   7        help
   8          The balloon driver allows the Xen domain to request more memory from
   9          the system to expand the domain's memory allocation, or alternatively
  10          return unneeded memory to the system.
  11
  12config XEN_SCRUB_PAGES
  13        bool "Scrub pages before returning them to system"
  14        depends on XEN_BALLOON
  15        default y
  16        help
  17          Scrub pages before returning them to the system for reuse by
  18          other domains.  This makes sure that any confidential data
  19          is not accidentally visible to other domains.  Is it more
  20          secure, but slightly less efficient.
  21          If in doubt, say yes.
  22
  23config XEN_DEV_EVTCHN
  24        tristate "Xen /dev/xen/evtchn device"
  25        default y
  26        help
  27          The evtchn driver allows a userspace process to triger event
  28          channels and to receive notification of an event channel
  29          firing.
  30          If in doubt, say yes.
  31
  32config XENFS
  33        tristate "Xen filesystem"
  34        default y
  35        help
  36          The xen filesystem provides a way for domains to share
  37          information with each other and with the hypervisor.
  38          For example, by reading and writing the "xenbus" file, guests
  39          may pass arbitrary information to the initial domain.
  40          If in doubt, say yes.
  41
  42config XEN_COMPAT_XENFS
  43       bool "Create compatibility mount point /proc/xen"
  44       depends on XENFS
  45       default y
  46       help
  47         The old xenstore userspace tools expect to find "xenbus"
  48         under /proc/xen, but "xenbus" is now found at the root of the
  49         xenfs filesystem.  Selecting this causes the kernel to create
  50         the compatibility mount point /proc/xen if it is running on
  51         a xen platform.
  52         If in doubt, say yes.
  53
  54config XEN_SYS_HYPERVISOR
  55       bool "Create xen entries under /sys/hypervisor"
  56       depends on SYSFS
  57       select SYS_HYPERVISOR
  58       default y
  59       help
  60         Create entries under /sys/hypervisor describing the Xen
  61         hypervisor environment.  When running native or in another
  62         virtual environment, /sys/hypervisor will still be present,
  63         but will have no xen contents.
  64
  65endmenu
  66