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Randy Dunlap27fb7f02010-03-05 13:44:18 -08001menu "Xen driver support"
2 depends on XEN
3
Jeremy Fitzhardinge17758262008-04-02 10:54:13 -07004config XEN_BALLOON
5 bool "Xen memory balloon driver"
Jeremy Fitzhardinge17758262008-04-02 10:54:13 -07006 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.
Alex Zeffertt1107ba82009-01-07 18:07:11 -080022
Ian Campbellf7116282009-02-06 19:21:19 -080023config XEN_DEV_EVTCHN
24 tristate "Xen /dev/xen/evtchn device"
Ian Campbellf7116282009-02-06 19:21:19 -080025 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
Alex Zeffertt1107ba82009-01-07 18:07:11 -080032config XENFS
33 tristate "Xen filesystem"
Alex Zeffertt1107ba82009-01-07 18:07:11 -080034 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
Matt LaPlante692105b2009-01-26 11:12:25 +010050 the compatibility mount point /proc/xen if it is running on
Alex Zeffertt1107ba82009-01-07 18:07:11 -080051 a xen platform.
52 If in doubt, say yes.
53
Jeremy Fitzhardingecff7e812009-03-10 14:39:59 -070054config XEN_SYS_HYPERVISOR
55 bool "Create xen entries under /sys/hypervisor"
Randy Dunlap27fb7f02010-03-05 13:44:18 -080056 depends on SYSFS
Jeremy Fitzhardingecff7e812009-03-10 14:39:59 -070057 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,
Randy Dunlap27fb7f02010-03-05 13:44:18 -080063 but will have no xen contents.
64
Stefano Stabellini183d03c2010-05-17 17:08:21 +010065config XEN_PLATFORM_PCI
66 tristate "xen platform pci device driver"
67 depends on XEN
68 default m
69 help
70 Driver for the Xen PCI Platform device: it is responsible for
71 initializing xenbus and grant_table when running in a Xen HVM
72 domain. As a consequence this driver is required to run any Xen PV
73 frontend on Xen HVM.
Randy Dunlap27fb7f02010-03-05 13:44:18 -080074endmenu