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Linux kernel mirror (for testing)
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linux
1#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "IA-64 Linux Kernel Configuration"
7
8source "init/Kconfig"
9
10menu "Processor type and features"
11
12config IA64
13 bool
14 select PCI if (!IA64_HP_SIM)
15 select ACPI if (!IA64_HP_SIM)
16 select PM if (!IA64_HP_SIM)
17 default y
18 help
19 The Itanium Processor Family is Intel's 64-bit successor to
20 the 32-bit X86 line. The IA-64 Linux project has a home
21 page at <http://www.linuxia64.org/> and a mailing list at
22 <linux-ia64@vger.kernel.org>.
23
24config 64BIT
25 bool
26 select ATA_NONSTANDARD if ATA
27 default y
28
29config ZONE_DMA
30 def_bool y
31 depends on !IA64_SGI_SN2
32
33config MMU
34 bool
35 default y
36
37config SWIOTLB
38 bool
39
40config RWSEM_XCHGADD_ALGORITHM
41 bool
42 default y
43
44config ARCH_HAS_ILOG2_U32
45 bool
46 default n
47
48config ARCH_HAS_ILOG2_U64
49 bool
50 default n
51
52config GENERIC_FIND_NEXT_BIT
53 bool
54 default y
55
56config GENERIC_CALIBRATE_DELAY
57 bool
58 default y
59
60config TIME_INTERPOLATION
61 bool
62 default y
63
64config DMI
65 bool
66 default y
67
68config EFI
69 bool
70 default y
71
72config GENERIC_IOMAP
73 bool
74 default y
75
76config SCHED_NO_NO_OMIT_FRAME_POINTER
77 bool
78 default y
79
80config IA64_UNCACHED_ALLOCATOR
81 bool
82 select GENERIC_ALLOCATOR
83
84config AUDIT_ARCH
85 bool
86 default y
87
88choice
89 prompt "System type"
90 default IA64_GENERIC
91
92config IA64_GENERIC
93 bool "generic"
94 select NUMA
95 select ACPI_NUMA
96 select SWIOTLB
97 help
98 This selects the system type of your hardware. A "generic" kernel
99 will run on any supported IA-64 system. However, if you configure
100 a kernel for your specific system, it will be faster and smaller.
101
102 generic For any supported IA-64 system
103 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
104 HP-zx1/sx1000 For HP systems
105 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
106 SGI-SN2 For SGI Altix systems
107 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
108
109 If you don't know what to do, choose "generic".
110
111config IA64_DIG
112 bool "DIG-compliant"
113 select SWIOTLB
114
115config IA64_HP_ZX1
116 bool "HP-zx1/sx1000"
117 help
118 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
119 support for the HP I/O MMU.
120
121config IA64_HP_ZX1_SWIOTLB
122 bool "HP-zx1/sx1000 with software I/O TLB"
123 select SWIOTLB
124 help
125 Build a kernel that runs on HP zx1 and sx1000 systems even when they
126 have broken PCI devices which cannot DMA to full 32 bits. Apart
127 from support for the HP I/O MMU, this includes support for the software
128 I/O TLB, which allows supporting the broken devices at the expense of
129 wasting some kernel memory (about 2MB by default).
130
131config IA64_SGI_SN2
132 bool "SGI-SN2"
133 help
134 Selecting this option will optimize the kernel for use on sn2 based
135 systems, but the resulting kernel binary will not run on other
136 types of ia64 systems. If you have an SGI Altix system, it's safe
137 to select this option. If in doubt, select ia64 generic support
138 instead.
139
140config IA64_HP_SIM
141 bool "Ski-simulator"
142 select SWIOTLB
143
144endchoice
145
146choice
147 prompt "Processor type"
148 default ITANIUM
149
150config ITANIUM
151 bool "Itanium"
152 help
153 Select your IA-64 processor type. The default is Itanium.
154 This choice is safe for all IA-64 systems, but may not perform
155 optimally on systems with, say, Itanium 2 or newer processors.
156
157config MCKINLEY
158 bool "Itanium 2"
159 help
160 Select this to configure for an Itanium 2 (McKinley) processor.
161
162endchoice
163
164choice
165 prompt "Kernel page size"
166 default IA64_PAGE_SIZE_16KB
167
168config IA64_PAGE_SIZE_4KB
169 bool "4KB"
170 help
171 This lets you select the page size of the kernel. For best IA-64
172 performance, a page size of 8KB or 16KB is recommended. For best
173 IA-32 compatibility, a page size of 4KB should be selected (the vast
174 majority of IA-32 binaries work perfectly fine with a larger page
175 size). For Itanium 2 or newer systems, a page size of 64KB can also
176 be selected.
177
178 4KB For best IA-32 compatibility
179 8KB For best IA-64 performance
180 16KB For best IA-64 performance
181 64KB Requires Itanium 2 or newer processor.
182
183 If you don't know what to do, choose 16KB.
184
185config IA64_PAGE_SIZE_8KB
186 bool "8KB"
187
188config IA64_PAGE_SIZE_16KB
189 bool "16KB"
190
191config IA64_PAGE_SIZE_64KB
192 depends on !ITANIUM
193 bool "64KB"
194
195endchoice
196
197choice
198 prompt "Page Table Levels"
199 default PGTABLE_3
200
201config PGTABLE_3
202 bool "3 Levels"
203
204config PGTABLE_4
205 depends on !IA64_PAGE_SIZE_64KB
206 bool "4 Levels"
207
208endchoice
209
210source kernel/Kconfig.hz
211
212config IA64_BRL_EMU
213 bool
214 depends on ITANIUM
215 default y
216
217# align cache-sensitive data to 128 bytes
218config IA64_L1_CACHE_SHIFT
219 int
220 default "7" if MCKINLEY
221 default "6" if ITANIUM
222
223config IA64_CYCLONE
224 bool "Cyclone (EXA) Time Source support"
225 help
226 Say Y here to enable support for IBM EXA Cyclone time source.
227 If you're unsure, answer N.
228
229config IOSAPIC
230 bool
231 depends on !IA64_HP_SIM
232 default y
233
234config IA64_SGI_SN_XP
235 tristate "Support communication between SGI SSIs"
236 depends on IA64_GENERIC || IA64_SGI_SN2
237 select IA64_UNCACHED_ALLOCATOR
238 help
239 An SGI machine can be divided into multiple Single System
240 Images which act independently of each other and have
241 hardware based memory protection from the others. Enabling
242 this feature will allow for direct communication between SSIs
243 based on a network adapter and DMA messaging.
244
245config FORCE_MAX_ZONEORDER
246 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
247 range 11 17 if !HUGETLB_PAGE
248 default "17" if HUGETLB_PAGE
249 default "11"
250
251config SMP
252 bool "Symmetric multi-processing support"
253 help
254 This enables support for systems with more than one CPU. If you have
255 a system with only one CPU, say N. If you have a system with more
256 than one CPU, say Y.
257
258 If you say N here, the kernel will run on single and multiprocessor
259 systems, but will use only one CPU of a multiprocessor system. If
260 you say Y here, the kernel will run on many, but not all,
261 single processor systems. On a single processor system, the kernel
262 will run faster if you say N here.
263
264 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
265 available at <http://www.tldp.org/docs.html#howto>.
266
267 If you don't know what to do here, say N.
268
269config NR_CPUS
270 int "Maximum number of CPUs (2-1024)"
271 range 2 1024
272 depends on SMP
273 default "1024"
274 help
275 You should set this to the number of CPUs in your system, but
276 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
277 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
278 than 64 will cause the use of a CPU mask array, causing a small
279 performance hit.
280
281config HOTPLUG_CPU
282 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
283 depends on SMP && EXPERIMENTAL
284 select HOTPLUG
285 default n
286 ---help---
287 Say Y here to experiment with turning CPUs off and on. CPUs
288 can be controlled through /sys/devices/system/cpu/cpu#.
289 Say N if you want to disable CPU hotplug.
290
291config ARCH_ENABLE_MEMORY_HOTPLUG
292 def_bool y
293
294config SCHED_SMT
295 bool "SMT scheduler support"
296 depends on SMP
297 help
298 Improves the CPU scheduler's decision making when dealing with
299 Intel IA64 chips with MultiThreading at a cost of slightly increased
300 overhead in some places. If unsure say N here.
301
302config PERMIT_BSP_REMOVE
303 bool "Support removal of Bootstrap Processor"
304 depends on HOTPLUG_CPU
305 default n
306 ---help---
307 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
308 support.
309
310config FORCE_CPEI_RETARGET
311 bool "Force assumption that CPEI can be re-targetted"
312 depends on PERMIT_BSP_REMOVE
313 default n
314 ---help---
315 Say Y if you need to force the assumption that CPEI can be re-targetted to
316 any cpu in the system. This hint is available via ACPI 3.0 specifications.
317 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
318 This option it useful to enable this feature on older BIOS's as well.
319 You can also enable this by using boot command line option force_cpei=1.
320
321config PREEMPT
322 bool "Preemptible Kernel"
323 help
324 This option reduces the latency of the kernel when reacting to
325 real-time or interactive events by allowing a low priority process to
326 be preempted even if it is in kernel mode executing a system call.
327 This allows applications to run more reliably even when the system is
328 under load.
329
330 Say Y here if you are building a kernel for a desktop, embedded
331 or real-time system. Say N if you are unsure.
332
333source "mm/Kconfig"
334
335config ARCH_SELECT_MEMORY_MODEL
336 def_bool y
337
338config ARCH_DISCONTIGMEM_ENABLE
339 def_bool y
340 help
341 Say Y to support efficient handling of discontiguous physical memory,
342 for architectures which are either NUMA (Non-Uniform Memory Access)
343 or have huge holes in the physical address space for other reasons.
344 See <file:Documentation/vm/numa> for more.
345
346config ARCH_FLATMEM_ENABLE
347 def_bool y
348
349config ARCH_SPARSEMEM_ENABLE
350 def_bool y
351 depends on ARCH_DISCONTIGMEM_ENABLE
352
353config ARCH_DISCONTIGMEM_DEFAULT
354 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
355 depends on ARCH_DISCONTIGMEM_ENABLE
356
357config NUMA
358 bool "NUMA support"
359 depends on !IA64_HP_SIM && !FLATMEM
360 default y if IA64_SGI_SN2
361 select ACPI_NUMA if ACPI
362 help
363 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
364 Access). This option is for configuring high-end multiprocessor
365 server systems. If in doubt, say N.
366
367config NODES_SHIFT
368 int "Max num nodes shift(3-10)"
369 range 3 10
370 default "10"
371 depends on NEED_MULTIPLE_NODES
372 help
373 This option specifies the maximum number of nodes in your SSI system.
374 MAX_NUMNODES will be 2^(This value).
375 If in doubt, use the default.
376
377config ARCH_POPULATES_NODE_MAP
378 def_bool y
379
380# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
381# VIRTUAL_MEM_MAP has been retained for historical reasons.
382config VIRTUAL_MEM_MAP
383 bool "Virtual mem map"
384 depends on !SPARSEMEM
385 default y if !IA64_HP_SIM
386 help
387 Say Y to compile the kernel with support for a virtual mem map.
388 This code also only takes effect if a memory hole of greater than
389 1 Gb is found during boot. You must turn this option on if you
390 require the DISCONTIGMEM option for your machine. If you are
391 unsure, say Y.
392
393config HOLES_IN_ZONE
394 bool
395 default y if VIRTUAL_MEM_MAP
396
397config HAVE_ARCH_EARLY_PFN_TO_NID
398 def_bool y
399 depends on NEED_MULTIPLE_NODES
400
401config HAVE_ARCH_NODEDATA_EXTENSION
402 def_bool y
403 depends on NUMA
404
405config IA32_SUPPORT
406 bool "Support for Linux/x86 binaries"
407 help
408 IA-64 processors can execute IA-32 (X86) instructions. By
409 saying Y here, the kernel will include IA-32 system call
410 emulation support which makes it possible to transparently
411 run IA-32 Linux binaries on an IA-64 Linux system.
412 If in doubt, say Y.
413
414config COMPAT
415 bool
416 depends on IA32_SUPPORT
417 default y
418
419config IA64_MCA_RECOVERY
420 tristate "MCA recovery from errors other than TLB."
421
422config PERFMON
423 bool "Performance monitor support"
424 help
425 Selects whether support for the IA-64 performance monitor hardware
426 is included in the kernel. This makes some kernel data-structures a
427 little bigger and slows down execution a bit, but it is generally
428 a good idea to turn this on. If you're unsure, say Y.
429
430config IA64_PALINFO
431 tristate "/proc/pal support"
432 help
433 If you say Y here, you are able to get PAL (Processor Abstraction
434 Layer) information in /proc/pal. This contains useful information
435 about the processors in your systems, such as cache and TLB sizes
436 and the PAL firmware version in use.
437
438 To use this option, you have to ensure that the "/proc file system
439 support" (CONFIG_PROC_FS) is enabled, too.
440
441config SGI_SN
442 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
443
444config IA64_ESI
445 bool "ESI (Extensible SAL Interface) support"
446 help
447 If you say Y here, support is built into the kernel to
448 make ESI calls. ESI calls are used to support vendor-specific
449 firmware extensions, such as the ability to inject memory-errors
450 for test-purposes. If you're unsure, say N.
451
452source "drivers/sn/Kconfig"
453
454config KEXEC
455 bool "kexec system call (EXPERIMENTAL)"
456 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
457 help
458 kexec is a system call that implements the ability to shutdown your
459 current kernel, and to start another kernel. It is like a reboot
460 but it is indepedent of the system firmware. And like a reboot
461 you can start any kernel with it, not just Linux.
462
463 The name comes from the similiarity to the exec system call.
464
465 It is an ongoing process to be certain the hardware in a machine
466 is properly shutdown, so do not be surprised if this code does not
467 initially work for you. It may help to enable device hotplugging
468 support. As of this writing the exact hardware interface is
469 strongly in flux, so no good recommendation can be made.
470
471config CRASH_DUMP
472 bool "kernel crash dumps (EXPERIMENTAL)"
473 depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
474 help
475 Generate crash dump after being started by kexec.
476
477source "drivers/firmware/Kconfig"
478
479source "fs/Kconfig.binfmt"
480
481endmenu
482
483menu "Power management and ACPI"
484
485source "kernel/power/Kconfig"
486
487source "drivers/acpi/Kconfig"
488
489if PM
490
491source "arch/ia64/kernel/cpufreq/Kconfig"
492
493endif
494
495endmenu
496
497if !IA64_HP_SIM
498
499menu "Bus options (PCI, PCMCIA)"
500
501config PCI
502 bool "PCI support"
503 help
504 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
505 here unless you are using a simulator without PCI support.
506
507config PCI_DOMAINS
508 bool
509 default PCI
510
511source "drivers/pci/pcie/Kconfig"
512
513source "drivers/pci/Kconfig"
514
515source "drivers/pci/hotplug/Kconfig"
516
517source "drivers/pcmcia/Kconfig"
518
519endmenu
520
521endif
522
523source "net/Kconfig"
524
525source "drivers/Kconfig"
526
527config MSPEC
528 tristate "Memory special operations driver"
529 depends on IA64
530 select IA64_UNCACHED_ALLOCATOR
531 help
532 If you have an ia64 and you want to enable memory special
533 operations support (formerly known as fetchop), say Y here,
534 otherwise say N.
535
536source "fs/Kconfig"
537
538source "lib/Kconfig"
539
540#
541# Use the generic interrupt handling code in kernel/irq/:
542#
543config GENERIC_HARDIRQS
544 bool
545 default y
546
547config GENERIC_IRQ_PROBE
548 bool
549 default y
550
551config GENERIC_PENDING_IRQ
552 bool
553 depends on GENERIC_HARDIRQS && SMP
554 default y
555
556config IRQ_PER_CPU
557 bool
558 default y
559
560source "arch/ia64/hp/sim/Kconfig"
561
562menu "Instrumentation Support"
563 depends on EXPERIMENTAL
564
565source "arch/ia64/oprofile/Kconfig"
566
567config KPROBES
568 bool "Kprobes (EXPERIMENTAL)"
569 depends on KALLSYMS && EXPERIMENTAL && MODULES
570 help
571 Kprobes allows you to trap at almost any kernel address and
572 execute a callback function. register_kprobe() establishes
573 a probepoint and specifies the callback. Kprobes is useful
574 for kernel debugging, non-intrusive instrumentation and testing.
575 If in doubt, say "N".
576endmenu
577
578source "arch/ia64/Kconfig.debug"
579
580source "security/Kconfig"
581
582source "crypto/Kconfig"