ia64/xen-unstable

view linux-2.6-xen-sparse/arch/ia64/Kconfig @ 9760:8a2b2b45e237

[IA64] introduce config option

introduce XEN_IA64_DOM0_VP config.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author awilliam@ldap.hp.com
date Tue Apr 25 13:57:56 2006 -0600 (2006-04-25)
parents 6df0bdcf8c9d
children 4e0f2272fbcd
line source
1 #
2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
4 #
6 mainmenu "IA-64 Linux Kernel Configuration"
8 source "init/Kconfig"
10 menu "Processor type and features"
12 config IA64
13 bool
14 default y
15 help
16 The Itanium Processor Family is Intel's 64-bit successor to
17 the 32-bit X86 line. The IA-64 Linux project has a home
18 page at <http://www.linuxia64.org/> and a mailing list at
19 <linux-ia64@vger.kernel.org>.
21 config 64BIT
22 bool
23 default y
25 config MMU
26 bool
27 default y
29 config SWIOTLB
30 bool
31 default y
33 config RWSEM_XCHGADD_ALGORITHM
34 bool
35 default y
37 config GENERIC_CALIBRATE_DELAY
38 bool
39 default y
41 config TIME_INTERPOLATION
42 bool
43 default y
45 config EFI
46 bool
47 default y
49 config GENERIC_IOMAP
50 bool
51 default y
53 config XEN
54 bool
55 default y
56 help
57 Enable Xen hypervisor support. Resulting kernel runs
58 both as a guest OS on Xen and natively on hardware.
60 config ARCH_XEN
61 bool
62 default y
63 help
64 TEMP ONLY. Needs to be on for drivers/xen to build.
66 config XEN_PRIVILEGED_GUEST
67 bool "Privileged Guest"
68 default n
69 help
70 Used in drivers/xen/privcmd.c. Should go away?
72 config XEN_BLKDEV_GRANT
73 depends on XEN
74 bool
75 default y
77 config XEN_BLKDEV_FRONTEND
78 depends on XEN
79 bool
80 default y
82 config XEN_BACKEND
83 depends on XEN
84 bool
85 default y
87 config XEN_BLKDEV_BACKEND
88 depends on XEN && XEN_BACKEND
89 bool
90 default y
92 config XEN_IA64_DOM0_VP
93 depends on XEN
94 bool
95 default n
96 help
97 dom0 vp model
99 config XEN_SYSFS
100 bool "Export Xen attributes in sysfs"
101 depends on XEN && SYSFS
102 default y
103 help
104 Xen hypervisor attributes will show up under /sys/hypervisor/.
106 config XEN_INTERFACE_VERSION
107 hex
108 depends on XEN
109 default 0x00030101
111 config SCHED_NO_NO_OMIT_FRAME_POINTER
112 bool
113 default y
115 config IA64_UNCACHED_ALLOCATOR
116 bool
117 select GENERIC_ALLOCATOR
119 config DMA_IS_DMA32
120 bool
121 default y
123 choice
124 prompt "System type"
125 default IA64_GENERIC
127 config IA64_GENERIC
128 bool "generic"
129 select ACPI
130 select NUMA
131 select ACPI_NUMA
132 help
133 This selects the system type of your hardware. A "generic" kernel
134 will run on any supported IA-64 system. However, if you configure
135 a kernel for your specific system, it will be faster and smaller.
137 generic For any supported IA-64 system
138 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
139 HP-zx1/sx1000 For HP systems
140 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
141 SGI-SN2 For SGI Altix systems
142 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
144 If you don't know what to do, choose "generic".
146 config IA64_DIG
147 bool "DIG-compliant"
149 config IA64_HP_ZX1
150 bool "HP-zx1/sx1000"
151 help
152 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
153 support for the HP I/O MMU.
155 config IA64_HP_ZX1_SWIOTLB
156 bool "HP-zx1/sx1000 with software I/O TLB"
157 help
158 Build a kernel that runs on HP zx1 and sx1000 systems even when they
159 have broken PCI devices which cannot DMA to full 32 bits. Apart
160 from support for the HP I/O MMU, this includes support for the software
161 I/O TLB, which allows supporting the broken devices at the expense of
162 wasting some kernel memory (about 2MB by default).
164 config IA64_SGI_SN2
165 bool "SGI-SN2"
166 help
167 Selecting this option will optimize the kernel for use on sn2 based
168 systems, but the resulting kernel binary will not run on other
169 types of ia64 systems. If you have an SGI Altix system, it's safe
170 to select this option. If in doubt, select ia64 generic support
171 instead.
173 config IA64_HP_SIM
174 bool "Ski-simulator"
176 endchoice
178 choice
179 prompt "Processor type"
180 default ITANIUM
182 config ITANIUM
183 bool "Itanium"
184 help
185 Select your IA-64 processor type. The default is Itanium.
186 This choice is safe for all IA-64 systems, but may not perform
187 optimally on systems with, say, Itanium 2 or newer processors.
189 config MCKINLEY
190 bool "Itanium 2"
191 help
192 Select this to configure for an Itanium 2 (McKinley) processor.
194 endchoice
196 choice
197 prompt "Kernel page size"
198 default IA64_PAGE_SIZE_16KB
200 config IA64_PAGE_SIZE_4KB
201 bool "4KB"
202 help
203 This lets you select the page size of the kernel. For best IA-64
204 performance, a page size of 8KB or 16KB is recommended. For best
205 IA-32 compatibility, a page size of 4KB should be selected (the vast
206 majority of IA-32 binaries work perfectly fine with a larger page
207 size). For Itanium 2 or newer systems, a page size of 64KB can also
208 be selected.
210 4KB For best IA-32 compatibility
211 8KB For best IA-64 performance
212 16KB For best IA-64 performance
213 64KB Requires Itanium 2 or newer processor.
215 If you don't know what to do, choose 16KB.
217 config IA64_PAGE_SIZE_8KB
218 bool "8KB"
220 config IA64_PAGE_SIZE_16KB
221 bool "16KB"
223 config IA64_PAGE_SIZE_64KB
224 depends on !ITANIUM
225 bool "64KB"
227 endchoice
229 choice
230 prompt "Page Table Levels"
231 default PGTABLE_3
233 config PGTABLE_3
234 bool "3 Levels"
236 config PGTABLE_4
237 depends on !IA64_PAGE_SIZE_64KB
238 bool "4 Levels"
240 endchoice
242 source kernel/Kconfig.hz
244 config IA64_BRL_EMU
245 bool
246 depends on ITANIUM
247 default y
249 # align cache-sensitive data to 128 bytes
250 config IA64_L1_CACHE_SHIFT
251 int
252 default "7" if MCKINLEY
253 default "6" if ITANIUM
255 config IA64_CYCLONE
256 bool "Cyclone (EXA) Time Source support"
257 help
258 Say Y here to enable support for IBM EXA Cyclone time source.
259 If you're unsure, answer N.
261 config IOSAPIC
262 bool
263 depends on !IA64_HP_SIM
264 default y
266 config IA64_SGI_SN_XP
267 tristate "Support communication between SGI SSIs"
268 depends on IA64_GENERIC || IA64_SGI_SN2
269 select IA64_UNCACHED_ALLOCATOR
270 help
271 An SGI machine can be divided into multiple Single System
272 Images which act independently of each other and have
273 hardware based memory protection from the others. Enabling
274 this feature will allow for direct communication between SSIs
275 based on a network adapter and DMA messaging.
277 config FORCE_MAX_ZONEORDER
278 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
279 range 11 17 if !HUGETLB_PAGE
280 default "17" if HUGETLB_PAGE
281 default "11"
283 config SMP
284 bool "Symmetric multi-processing support"
285 help
286 This enables support for systems with more than one CPU. If you have
287 a system with only one CPU, say N. If you have a system with more
288 than one CPU, say Y.
290 If you say N here, the kernel will run on single and multiprocessor
291 systems, but will use only one CPU of a multiprocessor system. If
292 you say Y here, the kernel will run on many, but not all,
293 single processor systems. On a single processor system, the kernel
294 will run faster if you say N here.
296 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
297 available at <http://www.tldp.org/docs.html#howto>.
299 If you don't know what to do here, say N.
301 config NR_CPUS
302 int "Maximum number of CPUs (2-1024)"
303 range 2 1024
304 depends on SMP
305 default "64"
306 help
307 You should set this to the number of CPUs in your system, but
308 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
309 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
310 than 64 will cause the use of a CPU mask array, causing a small
311 performance hit.
313 config HOTPLUG_CPU
314 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
315 depends on SMP && EXPERIMENTAL
316 select HOTPLUG
317 default n
318 ---help---
319 Say Y here to experiment with turning CPUs off and on. CPUs
320 can be controlled through /sys/devices/system/cpu/cpu#.
321 Say N if you want to disable CPU hotplug.
323 config SCHED_SMT
324 bool "SMT scheduler support"
325 depends on SMP
326 default off
327 help
328 Improves the CPU scheduler's decision making when dealing with
329 Intel IA64 chips with MultiThreading at a cost of slightly increased
330 overhead in some places. If unsure say N here.
332 config PREEMPT
333 bool "Preemptible Kernel"
334 help
335 This option reduces the latency of the kernel when reacting to
336 real-time or interactive events by allowing a low priority process to
337 be preempted even if it is in kernel mode executing a system call.
338 This allows applications to run more reliably even when the system is
339 under load.
341 Say Y here if you are building a kernel for a desktop, embedded
342 or real-time system. Say N if you are unsure.
344 source "mm/Kconfig"
346 config ARCH_SELECT_MEMORY_MODEL
347 def_bool y
349 config ARCH_DISCONTIGMEM_ENABLE
350 def_bool y
351 help
352 Say Y to support efficient handling of discontiguous physical memory,
353 for architectures which are either NUMA (Non-Uniform Memory Access)
354 or have huge holes in the physical address space for other reasons.
355 See <file:Documentation/vm/numa> for more.
357 config ARCH_FLATMEM_ENABLE
358 def_bool y
360 config ARCH_SPARSEMEM_ENABLE
361 def_bool y
362 depends on ARCH_DISCONTIGMEM_ENABLE
364 config ARCH_DISCONTIGMEM_DEFAULT
365 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
366 depends on ARCH_DISCONTIGMEM_ENABLE
368 config NUMA
369 bool "NUMA support"
370 depends on !IA64_HP_SIM && !FLATMEM
371 default y if IA64_SGI_SN2
372 help
373 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
374 Access). This option is for configuring high-end multiprocessor
375 server systems. If in doubt, say N.
377 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
378 # VIRTUAL_MEM_MAP has been retained for historical reasons.
379 config VIRTUAL_MEM_MAP
380 bool "Virtual mem map"
381 depends on !SPARSEMEM
382 default y if !IA64_HP_SIM
383 help
384 Say Y to compile the kernel with support for a virtual mem map.
385 This code also only takes effect if a memory hole of greater than
386 1 Gb is found during boot. You must turn this option on if you
387 require the DISCONTIGMEM option for your machine. If you are
388 unsure, say Y.
390 config HOLES_IN_ZONE
391 bool
392 default y if VIRTUAL_MEM_MAP
394 config HAVE_ARCH_EARLY_PFN_TO_NID
395 def_bool y
396 depends on NEED_MULTIPLE_NODES
398 config IA32_SUPPORT
399 bool "Support for Linux/x86 binaries"
400 help
401 IA-64 processors can execute IA-32 (X86) instructions. By
402 saying Y here, the kernel will include IA-32 system call
403 emulation support which makes it possible to transparently
404 run IA-32 Linux binaries on an IA-64 Linux system.
405 If in doubt, say Y.
407 config COMPAT
408 bool
409 depends on IA32_SUPPORT
410 default y
412 config IA64_MCA_RECOVERY
413 tristate "MCA recovery from errors other than TLB."
415 config PERFMON
416 bool "Performance monitor support"
417 help
418 Selects whether support for the IA-64 performance monitor hardware
419 is included in the kernel. This makes some kernel data-structures a
420 little bigger and slows down execution a bit, but it is generally
421 a good idea to turn this on. If you're unsure, say Y.
423 config IA64_PALINFO
424 tristate "/proc/pal support"
425 help
426 If you say Y here, you are able to get PAL (Processor Abstraction
427 Layer) information in /proc/pal. This contains useful information
428 about the processors in your systems, such as cache and TLB sizes
429 and the PAL firmware version in use.
431 To use this option, you have to ensure that the "/proc file system
432 support" (CONFIG_PROC_FS) is enabled, too.
434 config SGI_SN
435 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
437 source "drivers/firmware/Kconfig"
439 source "fs/Kconfig.binfmt"
441 endmenu
443 menu "Power management and ACPI"
445 source "kernel/power/Kconfig"
447 source "drivers/acpi/Kconfig"
449 if PM
451 source "arch/ia64/kernel/cpufreq/Kconfig"
453 endif
455 endmenu
457 if !IA64_HP_SIM
459 menu "Bus options (PCI, PCMCIA)"
461 config PCI
462 bool "PCI support"
463 help
464 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
465 here unless you are using a simulator without PCI support.
467 config PCI_DOMAINS
468 bool
469 default PCI
471 source "drivers/pci/Kconfig"
473 source "drivers/pci/hotplug/Kconfig"
475 source "drivers/pcmcia/Kconfig"
477 endmenu
479 endif
481 source "net/Kconfig"
483 source "drivers/Kconfig"
485 source "fs/Kconfig"
487 source "lib/Kconfig"
489 #
490 # Use the generic interrupt handling code in kernel/irq/:
491 #
492 config GENERIC_HARDIRQS
493 bool
494 default y
496 config GENERIC_IRQ_PROBE
497 bool
498 default y
500 config GENERIC_PENDING_IRQ
501 bool
502 depends on GENERIC_HARDIRQS && SMP
503 default y
505 source "arch/ia64/hp/sim/Kconfig"
507 menu "Instrumentation Support"
508 depends on EXPERIMENTAL
510 source "arch/ia64/oprofile/Kconfig"
512 config KPROBES
513 bool "Kprobes (EXPERIMENTAL)"
514 depends on EXPERIMENTAL && MODULES
515 help
516 Kprobes allows you to trap at almost any kernel address and
517 execute a callback function. register_kprobe() establishes
518 a probepoint and specifies the callback. Kprobes is useful
519 for kernel debugging, non-intrusive instrumentation and testing.
520 If in doubt, say "N".
521 endmenu
523 source "arch/ia64/Kconfig.debug"
525 source "security/Kconfig"
527 source "crypto/Kconfig"