projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1775826c JF |
1 | config 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 | ||
| 10 | config 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. | |
| 1107ba88 | 20 | |
| f7116284 IC |
21 | config XEN_DEV_EVTCHN |
| 22 | tristate "Xen /dev/xen/evtchn device" | |
| 23 | depends on XEN | |
| 24 | default y | |
| 25 | help | |
| 26 | The evtchn driver allows a userspace process to triger event | |
| 27 | channels and to receive notification of an event channel | |
| 28 | firing. | |
| 29 | If in doubt, say yes. | |
| 30 | ||
| 1107ba88 AZ |
31 | config XENFS |
| 32 | tristate "Xen filesystem" | |
| 33 | depends on XEN | |
| 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 | ||
| 42 | config 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 | |
| 692105b8 | 50 | the compatibility mount point /proc/xen if it is running on |
| 1107ba88 AZ |
51 | a xen platform. |
| 52 | If in doubt, say yes. | |
| 53 | ||
| cff7e81b JF |
54 | config XEN_SYS_HYPERVISOR |
| 55 | bool "Create xen entries under /sys/hypervisor" | |
| 56 | depends on XEN && 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. |