Randy Dunlap | 27fb7f0 | 2010-03-05 13:44:18 -0800 | [diff] [blame] | 1 | menu "Xen driver support" |
| 2 | depends on XEN |
| 3 | |
Jeremy Fitzhardinge | 1775826 | 2008-04-02 10:54:13 -0700 | [diff] [blame] | 4 | config XEN_BALLOON |
| 5 | bool "Xen memory balloon driver" |
Jeremy Fitzhardinge | 1775826 | 2008-04-02 10:54:13 -0700 | [diff] [blame] | 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 | |
Dan Magenheimer | a50777c | 2011-07-08 12:26:21 -0600 | [diff] [blame] | 12 | config XEN_SELFBALLOONING |
| 13 | bool "Dynamically self-balloon kernel memory to target" |
Konrad Rzeszutek Wilk | 65d4b24 | 2011-07-30 11:21:09 -0400 | [diff] [blame] | 14 | depends on XEN && XEN_BALLOON && CLEANCACHE && SWAP && XEN_TMEM |
Dan Magenheimer | a50777c | 2011-07-08 12:26:21 -0600 | [diff] [blame] | 15 | default n |
| 16 | help |
| 17 | Self-ballooning dynamically balloons available kernel memory driven |
| 18 | by the current usage of anonymous memory ("committed AS") and |
| 19 | controlled by various sysfs-settable parameters. Configuring |
| 20 | FRONTSWAP is highly recommended; if it is not configured, self- |
Konrad Rzeszutek Wilk | ed4f346 | 2013-05-08 16:52:38 -0400 | [diff] [blame] | 21 | ballooning is disabled by default. If FRONTSWAP is configured, |
Dan Magenheimer | a50777c | 2011-07-08 12:26:21 -0600 | [diff] [blame] | 22 | frontswap-selfshrinking is enabled by default but can be disabled |
Konrad Rzeszutek Wilk | 54598d1 | 2013-05-08 16:44:06 -0400 | [diff] [blame] | 23 | with the 'tmem.selfshrink=0' kernel boot parameter; and self-ballooning |
Konrad Rzeszutek Wilk | ed4f346 | 2013-05-08 16:52:38 -0400 | [diff] [blame] | 24 | is enabled by default but can be disabled with the 'tmem.selfballooning=0' |
Dan Magenheimer | a50777c | 2011-07-08 12:26:21 -0600 | [diff] [blame] | 25 | kernel boot parameter. Note that systems without a sufficiently |
| 26 | large swap device should not enable self-ballooning. |
| 27 | |
Daniel Kiper | 080e2be | 2011-07-25 17:12:06 -0700 | [diff] [blame] | 28 | config XEN_BALLOON_MEMORY_HOTPLUG |
| 29 | bool "Memory hotplug support for Xen balloon driver" |
| 30 | default n |
| 31 | depends on XEN_BALLOON && MEMORY_HOTPLUG |
| 32 | help |
| 33 | Memory hotplug support for Xen balloon driver allows expanding memory |
| 34 | available for the system above limit declared at system startup. |
| 35 | It is very useful on critical systems which require long |
| 36 | run without rebooting. |
| 37 | |
| 38 | Memory could be hotplugged in following steps: |
| 39 | |
| 40 | 1) dom0: xl mem-max <domU> <maxmem> |
| 41 | where <maxmem> is >= requested memory size, |
| 42 | |
| 43 | 2) dom0: xl mem-set <domU> <memory> |
| 44 | where <memory> is requested memory size; alternatively memory |
| 45 | could be added by writing proper value to |
| 46 | /sys/devices/system/xen_memory/xen_memory0/target or |
| 47 | /sys/devices/system/xen_memory/xen_memory0/target_kb on dumU, |
| 48 | |
| 49 | 3) domU: for i in /sys/devices/system/memory/memory*/state; do \ |
| 50 | [ "`cat "$i"`" = offline ] && echo online > "$i"; done |
| 51 | |
| 52 | Memory could be onlined automatically on domU by adding following line to udev rules: |
| 53 | |
| 54 | SUBSYSTEM=="memory", ACTION=="add", RUN+="/bin/sh -c '[ -f /sys$devpath/state ] && echo online > /sys$devpath/state'" |
| 55 | |
| 56 | In that case step 3 should be omitted. |
| 57 | |
Jeremy Fitzhardinge | 1775826 | 2008-04-02 10:54:13 -0700 | [diff] [blame] | 58 | config XEN_SCRUB_PAGES |
| 59 | bool "Scrub pages before returning them to system" |
| 60 | depends on XEN_BALLOON |
| 61 | default y |
| 62 | help |
| 63 | Scrub pages before returning them to the system for reuse by |
| 64 | other domains. This makes sure that any confidential data |
| 65 | is not accidentally visible to other domains. Is it more |
| 66 | secure, but slightly less efficient. |
| 67 | If in doubt, say yes. |
Alex Zeffertt | 1107ba8 | 2009-01-07 18:07:11 -0800 | [diff] [blame] | 68 | |
Ian Campbell | f711628 | 2009-02-06 19:21:19 -0800 | [diff] [blame] | 69 | config XEN_DEV_EVTCHN |
| 70 | tristate "Xen /dev/xen/evtchn device" |
Ian Campbell | f711628 | 2009-02-06 19:21:19 -0800 | [diff] [blame] | 71 | default y |
| 72 | help |
Masanari Iida | 6b2aac4 | 2012-04-14 00:14:11 +0900 | [diff] [blame] | 73 | The evtchn driver allows a userspace process to trigger event |
Ian Campbell | f711628 | 2009-02-06 19:21:19 -0800 | [diff] [blame] | 74 | channels and to receive notification of an event channel |
| 75 | firing. |
| 76 | If in doubt, say yes. |
| 77 | |
Ian Campbell | df66025 | 2009-02-09 12:05:51 -0800 | [diff] [blame] | 78 | config XEN_BACKEND |
Jeremy Fitzhardinge | 329620a | 2009-03-21 23:29:34 -0700 | [diff] [blame] | 79 | bool "Backend driver support" |
Ian Campbell | df66025 | 2009-02-09 12:05:51 -0800 | [diff] [blame] | 80 | depends on XEN_DOM0 |
| 81 | default y |
| 82 | help |
| 83 | Support for backend device drivers that provide I/O services |
| 84 | to other virtual machines. |
| 85 | |
Alex Zeffertt | 1107ba8 | 2009-01-07 18:07:11 -0800 | [diff] [blame] | 86 | config XENFS |
| 87 | tristate "Xen filesystem" |
Bastian Blank | d8414d3 | 2011-12-16 11:34:33 -0500 | [diff] [blame] | 88 | select XEN_PRIVCMD |
Alex Zeffertt | 1107ba8 | 2009-01-07 18:07:11 -0800 | [diff] [blame] | 89 | default y |
| 90 | help |
| 91 | The xen filesystem provides a way for domains to share |
| 92 | information with each other and with the hypervisor. |
| 93 | For example, by reading and writing the "xenbus" file, guests |
| 94 | may pass arbitrary information to the initial domain. |
| 95 | If in doubt, say yes. |
| 96 | |
| 97 | config XEN_COMPAT_XENFS |
| 98 | bool "Create compatibility mount point /proc/xen" |
| 99 | depends on XENFS |
| 100 | default y |
| 101 | help |
| 102 | The old xenstore userspace tools expect to find "xenbus" |
| 103 | under /proc/xen, but "xenbus" is now found at the root of the |
| 104 | xenfs filesystem. Selecting this causes the kernel to create |
Matt LaPlante | 692105b | 2009-01-26 11:12:25 +0100 | [diff] [blame] | 105 | the compatibility mount point /proc/xen if it is running on |
Alex Zeffertt | 1107ba8 | 2009-01-07 18:07:11 -0800 | [diff] [blame] | 106 | a xen platform. |
| 107 | If in doubt, say yes. |
| 108 | |
Jeremy Fitzhardinge | cff7e81 | 2009-03-10 14:39:59 -0700 | [diff] [blame] | 109 | config XEN_SYS_HYPERVISOR |
| 110 | bool "Create xen entries under /sys/hypervisor" |
Randy Dunlap | 27fb7f0 | 2010-03-05 13:44:18 -0800 | [diff] [blame] | 111 | depends on SYSFS |
Jeremy Fitzhardinge | cff7e81 | 2009-03-10 14:39:59 -0700 | [diff] [blame] | 112 | select SYS_HYPERVISOR |
| 113 | default y |
| 114 | help |
| 115 | Create entries under /sys/hypervisor describing the Xen |
| 116 | hypervisor environment. When running native or in another |
| 117 | virtual environment, /sys/hypervisor will still be present, |
Randy Dunlap | 27fb7f0 | 2010-03-05 13:44:18 -0800 | [diff] [blame] | 118 | but will have no xen contents. |
| 119 | |
Ian Campbell | 2de06cc | 2009-02-09 12:05:51 -0800 | [diff] [blame] | 120 | config XEN_XENBUS_FRONTEND |
Linus Torvalds | 9c4bc1c | 2011-01-13 18:46:48 -0800 | [diff] [blame] | 121 | tristate |
| 122 | |
Gerd Hoffmann | ab31523 | 2010-12-14 18:40:46 +0000 | [diff] [blame] | 123 | config XEN_GNTDEV |
| 124 | tristate "userspace grant access device driver" |
| 125 | depends on XEN |
Stefano Stabellini | 1f169f6 | 2011-02-10 12:08:21 +0000 | [diff] [blame] | 126 | default m |
Gerd Hoffmann | ab31523 | 2010-12-14 18:40:46 +0000 | [diff] [blame] | 127 | select MMU_NOTIFIER |
| 128 | help |
| 129 | Allows userspace processes to use grants. |
Ian Campbell | 6bac7f9 | 2010-12-10 14:39:15 +0000 | [diff] [blame] | 130 | |
Daniel De Graaf | dd31405 | 2011-02-07 17:23:05 -0500 | [diff] [blame] | 131 | config XEN_GRANT_DEV_ALLOC |
| 132 | tristate "User-space grant reference allocator driver" |
| 133 | depends on XEN |
Stefano Stabellini | 1f169f6 | 2011-02-10 12:08:21 +0000 | [diff] [blame] | 134 | default m |
Daniel De Graaf | dd31405 | 2011-02-07 17:23:05 -0500 | [diff] [blame] | 135 | help |
| 136 | Allows userspace processes to create pages with access granted |
| 137 | to other domains. This can be used to implement frontend drivers |
| 138 | or as part of an inter-domain shared memory channel. |
| 139 | |
Konrad Rzeszutek Wilk | b097186 | 2010-05-11 10:05:49 -0400 | [diff] [blame] | 140 | config SWIOTLB_XEN |
| 141 | def_bool y |
Konrad Rzeszutek Wilk | 2775609 | 2010-10-08 11:06:20 -0400 | [diff] [blame] | 142 | select SWIOTLB |
Konrad Rzeszutek Wilk | b097186 | 2010-05-11 10:05:49 -0400 | [diff] [blame] | 143 | |
Dan Magenheimer | afec6e0 | 2011-06-17 15:06:20 -0600 | [diff] [blame] | 144 | config XEN_TMEM |
Dan Magenheimer | 10a7a077 | 2013-04-30 15:27:00 -0700 | [diff] [blame] | 145 | tristate |
Stefano Stabellini | 741ddbc | 2013-07-23 17:46:58 +0100 | [diff] [blame] | 146 | depends on !ARM && !ARM64 |
Dan Magenheimer | 10a7a077 | 2013-04-30 15:27:00 -0700 | [diff] [blame] | 147 | default m if (CLEANCACHE || FRONTSWAP) |
Dan Magenheimer | afec6e0 | 2011-06-17 15:06:20 -0600 | [diff] [blame] | 148 | help |
| 149 | Shim to interface in-kernel Transcendent Memory hooks |
| 150 | (e.g. cleancache and frontswap) to Xen tmem hypercalls. |
| 151 | |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 152 | config XEN_PCIDEV_BACKEND |
| 153 | tristate "Xen PCI-device backend driver" |
| 154 | depends on PCI && X86 && XEN |
| 155 | depends on XEN_BACKEND |
Konrad Rzeszutek Wilk | 2ebdc42 | 2011-07-11 16:49:41 -0400 | [diff] [blame] | 156 | default m |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 157 | help |
| 158 | The PCI device backend driver allows the kernel to export arbitrary |
| 159 | PCI devices to other guests. If you select this to be a module, you |
| 160 | will need to make sure no other driver has bound to the device(s) |
| 161 | you want to make visible to other guests. |
| 162 | |
Konrad Rzeszutek Wilk | 2ebdc42 | 2011-07-11 16:49:41 -0400 | [diff] [blame] | 163 | The parameter "passthrough" allows you specify how you want the PCI |
| 164 | devices to appear in the guest. You can choose the default (0) where |
| 165 | PCI topology starts at 00.00.0, or (1) for passthrough if you want |
| 166 | the PCI devices topology appear the same as in the host. |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 167 | |
Konrad Rzeszutek Wilk | 2ebdc42 | 2011-07-11 16:49:41 -0400 | [diff] [blame] | 168 | The "hide" parameter (only applicable if backend driver is compiled |
| 169 | into the kernel) allows you to bind the PCI devices to this module |
| 170 | from the default device drivers. The argument is the list of PCI BDFs: |
| 171 | xen-pciback.hide=(03:00.0)(04:00.0) |
Konrad Rzeszutek Wilk | 30edc14 | 2009-10-13 17:22:20 -0400 | [diff] [blame] | 172 | |
Konrad Rzeszutek Wilk | 2ebdc42 | 2011-07-11 16:49:41 -0400 | [diff] [blame] | 173 | If in doubt, say m. |
Bastian Blank | d8414d3 | 2011-12-16 11:34:33 -0500 | [diff] [blame] | 174 | |
Juergen Gross | d9d660f | 2014-08-28 06:44:12 +0200 | [diff] [blame] | 175 | config XEN_SCSI_BACKEND |
| 176 | tristate "XEN SCSI backend driver" |
| 177 | depends on XEN && XEN_BACKEND && TARGET_CORE |
| 178 | help |
| 179 | The SCSI backend driver allows the kernel to export its SCSI Devices |
| 180 | to other guests via a high-performance shared-memory interface. |
| 181 | Only needed for systems running as XEN driver domains (e.g. Dom0) and |
| 182 | if guests need generic access to SCSI devices. |
| 183 | |
Bastian Blank | d8414d3 | 2011-12-16 11:34:33 -0500 | [diff] [blame] | 184 | config XEN_PRIVCMD |
| 185 | tristate |
| 186 | depends on XEN |
| 187 | default m |
| 188 | |
Liu Jinsong | dcb93b9 | 2013-01-24 20:16:59 +0800 | [diff] [blame] | 189 | config XEN_STUB |
| 190 | bool "Xen stub drivers" |
Konrad Rzeszutek Wilk | 76fc253 | 2013-03-22 10:15:47 -0400 | [diff] [blame] | 191 | depends on XEN && X86_64 && BROKEN |
Liu Jinsong | dcb93b9 | 2013-01-24 20:16:59 +0800 | [diff] [blame] | 192 | default n |
| 193 | help |
| 194 | Allow kernel to install stub drivers, to reserve space for Xen drivers, |
| 195 | i.e. memory hotplug and cpu hotplug, and to block native drivers loaded, |
| 196 | so that real Xen drivers can be modular. |
| 197 | |
| 198 | To enable Xen features like cpu and memory hotplug, select Y here. |
| 199 | |
Liu Jinsong | ef92e7c | 2013-01-24 20:19:47 +0800 | [diff] [blame] | 200 | config XEN_ACPI_HOTPLUG_MEMORY |
| 201 | tristate "Xen ACPI memory hotplug" |
| 202 | depends on XEN_DOM0 && XEN_STUB && ACPI |
| 203 | default n |
| 204 | help |
| 205 | This is Xen ACPI memory hotplug. |
| 206 | |
| 207 | Currently Xen only support ACPI memory hot-add. If you want |
| 208 | to hot-add memory at runtime (the hot-added memory cannot be |
| 209 | removed until machine stop), select Y/M here, otherwise select N. |
| 210 | |
Liu Jinsong | 39adc48 | 2013-01-25 15:43:34 +0800 | [diff] [blame] | 211 | config XEN_ACPI_HOTPLUG_CPU |
| 212 | tristate "Xen ACPI cpu hotplug" |
| 213 | depends on XEN_DOM0 && XEN_STUB && ACPI |
| 214 | select ACPI_CONTAINER |
| 215 | default n |
| 216 | help |
| 217 | Xen ACPI cpu enumerating and hotplugging |
| 218 | |
| 219 | For hotplugging, currently Xen only support ACPI cpu hotadd. |
| 220 | If you want to hotadd cpu at runtime (the hotadded cpu cannot |
| 221 | be removed until machine stop), select Y/M here. |
| 222 | |
Konrad Rzeszutek Wilk | 59a5680 | 2012-02-03 16:03:20 -0500 | [diff] [blame] | 223 | config XEN_ACPI_PROCESSOR |
| 224 | tristate "Xen ACPI processor" |
Konrad Rzeszutek Wilk | df7a3ee | 2012-03-24 09:18:57 -0400 | [diff] [blame] | 225 | depends on XEN && X86 && ACPI_PROCESSOR && CPU_FREQ |
Konrad Rzeszutek Wilk | 102b208 | 2012-03-13 13:28:12 -0400 | [diff] [blame] | 226 | default m |
Konrad Rzeszutek Wilk | 59a5680 | 2012-02-03 16:03:20 -0500 | [diff] [blame] | 227 | help |
Andrew Morton | 1fd1443 | 2012-05-04 14:04:12 -0700 | [diff] [blame] | 228 | This ACPI processor uploads Power Management information to the Xen |
| 229 | hypervisor. |
Konrad Rzeszutek Wilk | 59a5680 | 2012-02-03 16:03:20 -0500 | [diff] [blame] | 230 | |
Andrew Morton | 1fd1443 | 2012-05-04 14:04:12 -0700 | [diff] [blame] | 231 | To do that the driver parses the Power Management data and uploads |
| 232 | said information to the Xen hypervisor. Then the Xen hypervisor can |
Masanari Iida | 5065a70 | 2013-11-30 21:38:43 +0900 | [diff] [blame] | 233 | select the proper Cx and Pxx states. It also registers itself as the |
Andrew Morton | 1fd1443 | 2012-05-04 14:04:12 -0700 | [diff] [blame] | 234 | SMM so that other drivers (such as ACPI cpufreq scaling driver) will |
| 235 | not load. |
Konrad Rzeszutek Wilk | 59a5680 | 2012-02-03 16:03:20 -0500 | [diff] [blame] | 236 | |
Andrew Morton | 1fd1443 | 2012-05-04 14:04:12 -0700 | [diff] [blame] | 237 | To compile this driver as a module, choose M here: the module will be |
| 238 | called xen_acpi_processor If you do not know what to choose, select |
| 239 | M here. If the CPUFREQ drivers are built in, select Y here. |
Konrad Rzeszutek Wilk | 59a5680 | 2012-02-03 16:03:20 -0500 | [diff] [blame] | 240 | |
Liu, Jinsong | cef12ee | 2012-06-07 19:56:51 +0800 | [diff] [blame] | 241 | config XEN_MCE_LOG |
| 242 | bool "Xen platform mcelog" |
| 243 | depends on XEN_DOM0 && X86_64 && X86_MCE |
| 244 | default n |
| 245 | help |
| 246 | Allow kernel fetching MCE error from Xen platform and |
| 247 | converting it into Linux mcelog format for mcelog tools |
| 248 | |
Ian Campbell | c2374bf | 2012-10-03 12:17:50 +0100 | [diff] [blame] | 249 | config XEN_HAVE_PVMMU |
| 250 | bool |
| 251 | |
Daniel Kiper | be81c8a | 2014-06-30 19:53:02 +0200 | [diff] [blame] | 252 | config XEN_EFI |
| 253 | def_bool y |
| 254 | depends on X86_64 && EFI |
| 255 | |
David Vrabel | 628c28e | 2015-03-11 14:49:56 +0000 | [diff] [blame^] | 256 | config XEN_AUTO_XLATE |
| 257 | def_bool y |
| 258 | depends on ARM || ARM64 || XEN_PVHVM |
| 259 | help |
| 260 | Support for auto-translated physmap guests. |
| 261 | |
Randy Dunlap | 27fb7f0 | 2010-03-05 13:44:18 -0800 | [diff] [blame] | 262 | endmenu |