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Kconfig @ 34

Last change on this file since 34 was 34, checked in by hartmans, 17 years ago
Add xen and xen-common
File size: 13.9 KB

Line
1	#
2	# For a description of the syntax of this configuration file,
3	# see Documentation/kbuild/kconfig-language.txt.
4	#
5
6	mainmenu "IA-64 Linux Kernel Configuration"
7
8	source "init/Kconfig"
9
10	menu "Processor type and features"
11
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>.
20
21	config 64BIT
22	bool
23	default y
24
25	config MMU
26	bool
27	default y
28
29	config SWIOTLB
30	bool
31	default y
32
33	config RWSEM_XCHGADD_ALGORITHM
34	bool
35	default y
36
37	config GENERIC_FIND_NEXT_BIT
38	bool
39	default y
40
41	config GENERIC_CALIBRATE_DELAY
42	bool
43	default y
44
45	config TIME_INTERPOLATION
46	bool
47	default y
48
49	config DMI
50	bool
51	default y
52
53	config EFI
54	bool
55	default y
56
57	config GENERIC_IOMAP
58	bool
59	default y
60
61	config XEN
62	bool "Xen hypervisor support"
63	default y
64	help
65	Enable Xen hypervisor support. Resulting kernel runs
66	both as a guest OS on Xen and natively on hardware.
67
68	config XEN_IA64_VDSO_PARAVIRT
69	bool
70	depends on XEN && !ITANIUM
71	default y
72	help
73	vDSO paravirtualization
74
75	config XEN_IA64_EXPOSE_P2M
76	bool "Xen/IA64 exposure p2m table"
77	depends on XEN
78	default y
79	help
80	expose p2m from xen
81
82	config XEN_IA64_EXPOSE_P2M_USE_DTR
83	bool "Xen/IA64 map p2m table with dtr"
84	depends on XEN_IA64_EXPOSE_P2M
85	default y
86	help
87	use dtr to map the exposed p2m table
88
89	config SCHED_NO_NO_OMIT_FRAME_POINTER
90	bool
91	default y
92
93	config IA64_UNCACHED_ALLOCATOR
94	bool
95	select GENERIC_ALLOCATOR
96
97	config DMA_IS_DMA32
98	bool
99	default y
100
101	config DMA_IS_NORMAL
102	bool
103	depends on IA64_SGI_SN2
104	default y
105
106	config AUDIT_ARCH
107	bool
108	default y
109
110	choice
111	prompt "System type"
112	default IA64_GENERIC
113
114	config IA64_GENERIC
115	bool "generic"
116	select ACPI
117	select PCI
118	select NUMA
119	select ACPI_NUMA
120	help
121	This selects the system type of your hardware. A "generic" kernel
122	will run on any supported IA-64 system. However, if you configure
123	a kernel for your specific system, it will be faster and smaller.
124
125	generic For any supported IA-64 system
126	DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
127	HP-zx1/sx1000 For HP systems
128	HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
129	SGI-SN2 For SGI Altix systems
130	Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
131
132	If you don't know what to do, choose "generic".
133
134	config IA64_DIG
135	bool "DIG-compliant"
136
137	config IA64_HP_ZX1
138	bool "HP-zx1/sx1000"
139	help
140	Build a kernel that runs on HP zx1 and sx1000 systems. This adds
141	support for the HP I/O MMU.
142
143	config IA64_HP_ZX1_SWIOTLB
144	bool "HP-zx1/sx1000 with software I/O TLB"
145	help
146	Build a kernel that runs on HP zx1 and sx1000 systems even when they
147	have broken PCI devices which cannot DMA to full 32 bits. Apart
148	from support for the HP I/O MMU, this includes support for the software
149	I/O TLB, which allows supporting the broken devices at the expense of
150	wasting some kernel memory (about 2MB by default).
151
152	config IA64_SGI_SN2
153	bool "SGI-SN2"
154	help
155	Selecting this option will optimize the kernel for use on sn2 based
156	systems, but the resulting kernel binary will not run on other
157	types of ia64 systems. If you have an SGI Altix system, it's safe
158	to select this option. If in doubt, select ia64 generic support
159	instead.
160
161	config IA64_HP_SIM
162	bool "Ski-simulator"
163
164	endchoice
165
166	choice
167	prompt "Processor type"
168	default ITANIUM
169
170	config ITANIUM
171	bool "Itanium"
172	help
173	Select your IA-64 processor type. The default is Itanium.
174	This choice is safe for all IA-64 systems, but may not perform
175	optimally on systems with, say, Itanium 2 or newer processors.
176
177	config MCKINLEY
178	bool "Itanium 2"
179	help
180	Select this to configure for an Itanium 2 (McKinley) processor.
181
182	endchoice
183
184	choice
185	prompt "Kernel page size"
186	default IA64_PAGE_SIZE_16KB
187
188	config IA64_PAGE_SIZE_4KB
189	bool "4KB"
190	help
191	This lets you select the page size of the kernel. For best IA-64
192	performance, a page size of 8KB or 16KB is recommended. For best
193	IA-32 compatibility, a page size of 4KB should be selected (the vast
194	majority of IA-32 binaries work perfectly fine with a larger page
195	size). For Itanium 2 or newer systems, a page size of 64KB can also
196	be selected.
197
198	4KB For best IA-32 compatibility
199	8KB For best IA-64 performance
200	16KB For best IA-64 performance
201	64KB Requires Itanium 2 or newer processor.
202
203	If you don't know what to do, choose 16KB.
204
205	config IA64_PAGE_SIZE_8KB
206	bool "8KB"
207
208	config IA64_PAGE_SIZE_16KB
209	bool "16KB"
210
211	config IA64_PAGE_SIZE_64KB
212	depends on !ITANIUM
213	bool "64KB"
214
215	endchoice
216
217	choice
218	prompt "Page Table Levels"
219	default PGTABLE_3
220
221	config PGTABLE_3
222	bool "3 Levels"
223
224	config PGTABLE_4
225	depends on !IA64_PAGE_SIZE_64KB
226	bool "4 Levels"
227
228	endchoice
229
230	source kernel/Kconfig.hz
231
232	config IA64_BRL_EMU
233	bool
234	depends on ITANIUM
235	default y
236
237	# align cache-sensitive data to 128 bytes
238	config IA64_L1_CACHE_SHIFT
239	int
240	default "7" if MCKINLEY
241	default "6" if ITANIUM
242
243	config IA64_CYCLONE
244	bool "Cyclone (EXA) Time Source support"
245	help
246	Say Y here to enable support for IBM EXA Cyclone time source.
247	If you're unsure, answer N.
248
249	config IOSAPIC
250	bool
251	depends on !IA64_HP_SIM
252	default y
253
254	config IA64_SGI_SN_XP
255	tristate "Support communication between SGI SSIs"
256	depends on IA64_GENERIC \|\| IA64_SGI_SN2
257	select IA64_UNCACHED_ALLOCATOR
258	help
259	An SGI machine can be divided into multiple Single System
260	Images which act independently of each other and have
261	hardware based memory protection from the others. Enabling
262	this feature will allow for direct communication between SSIs
263	based on a network adapter and DMA messaging.
264
265	config FORCE_MAX_ZONEORDER
266	int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
267	range 11 17 if !HUGETLB_PAGE
268	default "17" if HUGETLB_PAGE
269	default "11"
270
271	config SMP
272	bool "Symmetric multi-processing support"
273	help
274	This enables support for systems with more than one CPU. If you have
275	a system with only one CPU, say N. If you have a system with more
276	than one CPU, say Y.
277
278	If you say N here, the kernel will run on single and multiprocessor
279	systems, but will use only one CPU of a multiprocessor system. If
280	you say Y here, the kernel will run on many, but not all,
281	single processor systems. On a single processor system, the kernel
282	will run faster if you say N here.
283
284	See also the <file:Documentation/smp.txt> and the SMP-HOWTO
285	available at <http://www.tldp.org/docs.html#howto>.
286
287	If you don't know what to do here, say N.
288
289	config NR_CPUS
290	int "Maximum number of CPUs (2-1024)"
291	range 2 1024
292	depends on SMP
293	default "1024"
294	help
295	You should set this to the number of CPUs in your system, but
296	keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
297	only use 2 CPUs on a >2 CPU system. Setting this to a value larger
298	than 64 will cause the use of a CPU mask array, causing a small
299	performance hit.
300
301	config HOTPLUG_CPU
302	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
303	depends on SMP && EXPERIMENTAL
304	select HOTPLUG
305	default n
306	---help---
307	Say Y here to experiment with turning CPUs off and on. CPUs
308	can be controlled through /sys/devices/system/cpu/cpu#.
309	Say N if you want to disable CPU hotplug.
310
311	config ARCH_ENABLE_MEMORY_HOTPLUG
312	def_bool y
313
314	config SCHED_SMT
315	bool "SMT scheduler support"
316	depends on SMP
317	help
318	Improves the CPU scheduler's decision making when dealing with
319	Intel IA64 chips with MultiThreading at a cost of slightly increased
320	overhead in some places. If unsure say N here.
321
322	config PERMIT_BSP_REMOVE
323	bool "Support removal of Bootstrap Processor"
324	depends on HOTPLUG_CPU
325	default n
326	---help---
327	Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
328	support.
329
330	config FORCE_CPEI_RETARGET
331	bool "Force assumption that CPEI can be re-targetted"
332	depends on PERMIT_BSP_REMOVE
333	default n
334	---help---
335	Say Y if you need to force the assumption that CPEI can be re-targetted to
336	any cpu in the system. This hint is available via ACPI 3.0 specifications.
337	Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
338	This option it useful to enable this feature on older BIOS's as well.
339	You can also enable this by using boot command line option force_cpei=1.
340
341	config PREEMPT
342	bool "Preemptible Kernel"
343	help
344	This option reduces the latency of the kernel when reacting to
345	real-time or interactive events by allowing a low priority process to
346	be preempted even if it is in kernel mode executing a system call.
347	This allows applications to run more reliably even when the system is
348	under load.
349
350	Say Y here if you are building a kernel for a desktop, embedded
351	or real-time system. Say N if you are unsure.
352
353	source "mm/Kconfig"
354
355	config ARCH_SELECT_MEMORY_MODEL
356	def_bool y
357
358	config ARCH_DISCONTIGMEM_ENABLE
359	def_bool y
360	help
361	Say Y to support efficient handling of discontiguous physical memory,
362	for architectures which are either NUMA (Non-Uniform Memory Access)
363	or have huge holes in the physical address space for other reasons.
364	See <file:Documentation/vm/numa> for more.
365
366	config ARCH_FLATMEM_ENABLE
367	def_bool y
368
369	config ARCH_SPARSEMEM_ENABLE
370	def_bool y
371	depends on ARCH_DISCONTIGMEM_ENABLE
372
373	config ARCH_DISCONTIGMEM_DEFAULT
374	def_bool y if (IA64_SGI_SN2 \|\| IA64_GENERIC \|\| IA64_HP_ZX1 \|\| IA64_HP_ZX1_SWIOTLB)
375	depends on ARCH_DISCONTIGMEM_ENABLE
376
377	config NUMA
378	bool "NUMA support"
379	depends on !IA64_HP_SIM && !FLATMEM
380	default y if IA64_SGI_SN2
381	help
382	Say Y to compile the kernel to support NUMA (Non-Uniform Memory
383	Access). This option is for configuring high-end multiprocessor
384	server systems. If in doubt, say N.
385
386	config NODES_SHIFT
387	int "Max num nodes shift(3-10)"
388	range 3 10
389	default "10"
390	depends on NEED_MULTIPLE_NODES
391	help
392	This option specifies the maximum number of nodes in your SSI system.
393	MAX_NUMNODES will be 2^(This value).
394	If in doubt, use the default.
395
396	# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
397	# VIRTUAL_MEM_MAP has been retained for historical reasons.
398	config VIRTUAL_MEM_MAP
399	bool "Virtual mem map"
400	depends on !SPARSEMEM
401	default y if !IA64_HP_SIM
402	help
403	Say Y to compile the kernel with support for a virtual mem map.
404	This code also only takes effect if a memory hole of greater than
405	1 Gb is found during boot. You must turn this option on if you
406	require the DISCONTIGMEM option for your machine. If you are
407	unsure, say Y.
408
409	config HOLES_IN_ZONE
410	bool
411	default y if VIRTUAL_MEM_MAP
412
413	config HAVE_ARCH_EARLY_PFN_TO_NID
414	def_bool y
415	depends on NEED_MULTIPLE_NODES
416
417	config HAVE_ARCH_NODEDATA_EXTENSION
418	def_bool y
419	depends on NUMA
420
421	config IA32_SUPPORT
422	bool "Support for Linux/x86 binaries"
423	help
424	IA-64 processors can execute IA-32 (X86) instructions. By
425	saying Y here, the kernel will include IA-32 system call
426	emulation support which makes it possible to transparently
427	run IA-32 Linux binaries on an IA-64 Linux system.
428	If in doubt, say Y.
429
430	config COMPAT
431	bool
432	depends on IA32_SUPPORT
433	default y
434
435	config IA64_MCA_RECOVERY
436	tristate "MCA recovery from errors other than TLB."
437
438	config PERFMON
439	bool "Performance monitor support"
440	help
441	Selects whether support for the IA-64 performance monitor hardware
442	is included in the kernel. This makes some kernel data-structures a
443	little bigger and slows down execution a bit, but it is generally
444	a good idea to turn this on. If you're unsure, say Y.
445
446	config IA64_PALINFO
447	tristate "/proc/pal support"
448	help
449	If you say Y here, you are able to get PAL (Processor Abstraction
450	Layer) information in /proc/pal. This contains useful information
451	about the processors in your systems, such as cache and TLB sizes
452	and the PAL firmware version in use.
453
454	To use this option, you have to ensure that the "/proc file system
455	support" (CONFIG_PROC_FS) is enabled, too.
456
457	config SGI_SN
458	def_bool y if (IA64_SGI_SN2 \|\| IA64_GENERIC)
459
460	source "drivers/sn/Kconfig"
461
462	source "drivers/firmware/Kconfig"
463
464	source "fs/Kconfig.binfmt"
465
466	endmenu
467
468	menu "Power management and ACPI"
469
470	source "kernel/power/Kconfig"
471
472	source "drivers/acpi/Kconfig"
473
474	if PM
475
476	source "arch/ia64/kernel/cpufreq/Kconfig"
477
478	endif
479
480	endmenu
481
482	if !IA64_HP_SIM
483
484	menu "Bus options (PCI, PCMCIA)"
485
486	config PCI
487	bool "PCI support"
488	help
489	Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
490	here unless you are using a simulator without PCI support.
491
492	config PCI_DOMAINS
493	bool
494	default PCI
495
496	config XEN_PCIDEV_FRONTEND
497	bool "Xen PCI Frontend"
498	depends on PCI && XEN
499	default y
500	help
501	The PCI device frontend driver allows the kernel to import arbitrary
502	PCI devices from a PCI backend to support PCI driver domains.
503
504	config XEN_PCIDEV_FE_DEBUG
505	bool "Xen PCI Frontend Debugging"
506	depends on XEN_PCIDEV_FRONTEND
507	default n
508	help
509	Enables some debug statements within the PCI Frontend.
510
511	source "drivers/pci/pcie/Kconfig"
512
513	source "drivers/pci/Kconfig"
514
515	source "drivers/pci/hotplug/Kconfig"
516
517	source "drivers/pcmcia/Kconfig"
518
519	endmenu
520
521	endif
522
523	source "net/Kconfig"
524
525	source "drivers/Kconfig"
526
527	source "fs/Kconfig"
528
529	source "lib/Kconfig"
530
531	#
532	# Use the generic interrupt handling code in kernel/irq/:
533	#
534	config GENERIC_HARDIRQS
535	bool
536	default y
537
538	config GENERIC_IRQ_PROBE
539	bool
540	default y
541
542	config GENERIC_PENDING_IRQ
543	bool
544	depends on GENERIC_HARDIRQS && SMP
545	default y
546
547	config IRQ_PER_CPU
548	bool
549	default y
550
551	source "arch/ia64/hp/sim/Kconfig"
552
553	menu "Instrumentation Support"
554	depends on EXPERIMENTAL
555
556	source "arch/ia64/oprofile/Kconfig"
557
558	config KPROBES
559	bool "Kprobes (EXPERIMENTAL)"
560	depends on EXPERIMENTAL && MODULES
561	help
562	Kprobes allows you to trap at almost any kernel address and
563	execute a callback function. register_kprobe() establishes
564	a probepoint and specifies the callback. Kprobes is useful
565	for kernel debugging, non-intrusive instrumentation and testing.
566	If in doubt, say "N".
567	endmenu
568
569	source "arch/ia64/Kconfig.debug"
570
571	source "security/Kconfig"
572
573	source "crypto/Kconfig"
574
575	#
576	# override default values of drivers/xen/Kconfig
577	#
578	if XEN
579	config XEN_SMPBOOT
580	default n
581	endif
582
583	source "drivers/xen/Kconfig"

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