1 menu "Xen driver support"
5 bool "Xen memory balloon driver"
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.
12 config XEN_SCRUB_PAGES
13 bool "Scrub pages before returning them to system"
14 depends on XEN_BALLOON
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.
24 tristate "Xen /dev/xen/evtchn device"
27 The evtchn driver allows a userspace process to triger event
28 channels and to receive notification of an event channel
33 bool "Backend driver support"
37 Support for backend device drivers that provide I/O services
38 to other virtual machines.
40 config XEN_BLKDEV_BACKEND
41 tristate "Block-device backend driver"
42 depends on XEN_BACKEND && BLOCK
44 The block-device backend driver allows the kernel to export its
45 block devices to other guests via a high-performance shared-memory
49 tristate "Xen filesystem"
52 The xen filesystem provides a way for domains to share
53 information with each other and with the hypervisor.
54 For example, by reading and writing the "xenbus" file, guests
55 may pass arbitrary information to the initial domain.
58 config XEN_COMPAT_XENFS
59 bool "Create compatibility mount point /proc/xen"
63 The old xenstore userspace tools expect to find "xenbus"
64 under /proc/xen, but "xenbus" is now found at the root of the
65 xenfs filesystem. Selecting this causes the kernel to create
66 the compatibility mount point /proc/xen if it is running on
70 config XEN_SYS_HYPERVISOR
71 bool "Create xen entries under /sys/hypervisor"
76 Create entries under /sys/hypervisor describing the Xen
77 hypervisor environment. When running native or in another
78 virtual environment, /sys/hypervisor will still be present,
79 but will have no xen contents.
81 config XEN_XENBUS_FRONTEND
85 tristate "userspace grant access device driver"
90 Allows userspace processes to use grants.
92 config XEN_GRANT_DEV_ALLOC
93 tristate "User-space grant reference allocator driver"
97 Allows userspace processes to create pages with access granted
98 to other domains. This can be used to implement frontend drivers
99 or as part of an inter-domain shared memory channel.
101 config XEN_PLATFORM_PCI
102 tristate "xen platform pci device driver"
103 depends on XEN_PVHVM && PCI
106 Driver for the Xen PCI Platform device: it is responsible for
107 initializing xenbus and grant_table when running in a Xen HVM
108 domain. As a consequence this driver is required to run any Xen PV