3 source "kernel/Kconfig.freezer"
5 menu "Processor type and features"
9 select PCI if (!IA64_HP_SIM)
10 select ACPI if (!IA64_HP_SIM)
11 select PM if (!IA64_HP_SIM)
12 select ARCH_SUPPORTS_MSI
13 select HAVE_UNSTABLE_SCHED_CLOCK
17 select HAVE_KRETPROBES
18 select HAVE_FTRACE_MCOUNT_RECORD
19 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
20 select HAVE_FUNCTION_TRACER
23 select HAVE_ARCH_TRACEHOOK
24 select HAVE_DMA_API_DEBUG
25 select HAVE_GENERIC_HARDIRQS
27 select HAVE_MEMBLOCK_NODE_MAP
28 select ARCH_DISCARD_MEMBLOCK
29 select GENERIC_IRQ_PROBE
30 select GENERIC_PENDING_IRQ if SMP
32 select GENERIC_IRQ_SHOW
33 select ARCH_WANT_OPTIONAL_GPIOLIB
34 select ARCH_HAVE_NMI_SAFE_CMPXCHG
36 select GENERIC_SMP_IDLE_THREAD
38 select ARCH_TASK_STRUCT_ALLOCATOR
39 select ARCH_THREAD_INFO_ALLOCATOR
40 select ARCH_CLOCKSOURCE_DATA
41 select GENERIC_TIME_VSYSCALL
44 The Itanium Processor Family is Intel's 64-bit successor to
45 the 32-bit X86 line. The IA-64 Linux project has a home
46 page at <http://www.linuxia64.org/> and a mailing list at
47 <linux-ia64@vger.kernel.org>.
51 select ATA_NONSTANDARD if ATA
56 depends on !IA64_SGI_SN2
66 config ARCH_DMA_ADDR_T_64BIT
69 config NEED_DMA_MAP_STATE
72 config NEED_SG_DMA_LENGTH
78 config STACKTRACE_SUPPORT
81 config GENERIC_LOCKBREAK
84 config RWSEM_XCHGADD_ALGORITHM
88 config HUGETLB_PAGE_SIZE_VARIABLE
90 depends on HUGETLB_PAGE
93 config GENERIC_CALIBRATE_DELAY
97 config HAVE_SETUP_PER_CPU_AREA
111 config SCHED_OMIT_FRAME_POINTER
115 config IA64_UNCACHED_ALLOCATOR
117 select GENERIC_ALLOCATOR
119 config ARCH_USES_PG_UNCACHED
121 depends on IA64_UNCACHED_ALLOCATOR
127 menuconfig PARAVIRT_GUEST
128 bool "Paravirtualized guest support"
131 Say Y here to get to see options related to running Linux under
132 various hypervisors. This option alone does not add any kernel code.
134 If you say N, all options in this submenu will be skipped and disabled.
139 bool "Enable paravirtualization code"
140 depends on PARAVIRT_GUEST
143 This changes the kernel so it can modify itself when it is run
144 under a hypervisor, potentially improving performance significantly
145 over full virtualization. However, when run without a hypervisor
146 the kernel is theoretically slower and slightly larger.
149 source "arch/ia64/xen/Kconfig"
164 This selects the system type of your hardware. A "generic" kernel
165 will run on any supported IA-64 system. However, if you configure
166 a kernel for your specific system, it will be faster and smaller.
168 generic For any supported IA-64 system
169 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
170 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
171 HP-zx1/sx1000 For HP systems
172 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
173 SGI-SN2 For SGI Altix systems
174 SGI-UV For SGI UV systems
175 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
176 Xen-domU For xen domU system
178 If you don't know what to do, choose "generic".
185 bool "DIG+Intel+IOMMU"
192 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
193 support for the HP I/O MMU.
195 config IA64_HP_ZX1_SWIOTLB
196 bool "HP-zx1/sx1000 with software I/O TLB"
199 Build a kernel that runs on HP zx1 and sx1000 systems even when they
200 have broken PCI devices which cannot DMA to full 32 bits. Apart
201 from support for the HP I/O MMU, this includes support for the software
202 I/O TLB, which allows supporting the broken devices at the expense of
203 wasting some kernel memory (about 2MB by default).
210 Selecting this option will optimize the kernel for use on sn2 based
211 systems, but the resulting kernel binary will not run on other
212 types of ia64 systems. If you have an SGI Altix system, it's safe
213 to select this option. If in doubt, select ia64 generic support
222 Selecting this option will optimize the kernel for use on UV based
223 systems, but the resulting kernel binary will not run on other
224 types of ia64 systems. If you have an SGI UV system, it's safe
225 to select this option. If in doubt, select ia64 generic support
232 config IA64_XEN_GUEST
237 Build a kernel that runs on Xen guest domain. At this moment only
238 16KB page size in supported.
243 prompt "Processor type"
249 Select your IA-64 processor type. The default is Itanium.
250 This choice is safe for all IA-64 systems, but may not perform
251 optimally on systems with, say, Itanium 2 or newer processors.
256 Select this to configure for an Itanium 2 (McKinley) processor.
261 prompt "Kernel page size"
262 default IA64_PAGE_SIZE_16KB
264 config IA64_PAGE_SIZE_4KB
267 This lets you select the page size of the kernel. For best IA-64
268 performance, a page size of 8KB or 16KB is recommended. For best
269 IA-32 compatibility, a page size of 4KB should be selected (the vast
270 majority of IA-32 binaries work perfectly fine with a larger page
271 size). For Itanium 2 or newer systems, a page size of 64KB can also
274 4KB For best IA-32 compatibility
275 8KB For best IA-64 performance
276 16KB For best IA-64 performance
277 64KB Requires Itanium 2 or newer processor.
279 If you don't know what to do, choose 16KB.
281 config IA64_PAGE_SIZE_8KB
284 config IA64_PAGE_SIZE_16KB
287 config IA64_PAGE_SIZE_64KB
294 prompt "Page Table Levels"
301 depends on !IA64_PAGE_SIZE_64KB
312 source kernel/Kconfig.hz
320 # align cache-sensitive data to 128 bytes
321 config IA64_L1_CACHE_SHIFT
323 default "7" if MCKINLEY
324 default "6" if ITANIUM
327 bool "Cyclone (EXA) Time Source support"
329 Say Y here to enable support for IBM EXA Cyclone time source.
330 If you're unsure, answer N.
334 depends on !IA64_HP_SIM
337 config FORCE_MAX_ZONEORDER
338 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
339 range 11 17 if !HUGETLB_PAGE
340 default "17" if HUGETLB_PAGE
343 config VIRT_CPU_ACCOUNTING
344 bool "Deterministic task and CPU time accounting"
347 Select this option to enable more accurate task and CPU time
348 accounting. This is done by reading a CPU counter on each
349 kernel entry and exit and on transitions within the kernel
350 between system, softirq and hardirq state, so there is a
351 small performance impact.
352 If in doubt, say N here.
355 bool "Symmetric multi-processing support"
356 select USE_GENERIC_SMP_HELPERS
358 This enables support for systems with more than one CPU. If you have
359 a system with only one CPU, say N. If you have a system with more
362 If you say N here, the kernel will run on single and multiprocessor
363 systems, but will use only one CPU of a multiprocessor system. If
364 you say Y here, the kernel will run on many, but not all,
365 single processor systems. On a single processor system, the kernel
366 will run faster if you say N here.
368 See also the SMP-HOWTO available at
369 <http://www.tldp.org/docs.html#howto>.
371 If you don't know what to do here, say N.
374 int "Maximum number of CPUs (2-4096)"
379 You should set this to the number of CPUs in your system, but
380 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
381 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
382 than 64 will cause the use of a CPU mask array, causing a small
386 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
387 depends on SMP && EXPERIMENTAL
391 Say Y here to experiment with turning CPUs off and on. CPUs
392 can be controlled through /sys/devices/system/cpu/cpu#.
393 Say N if you want to disable CPU hotplug.
395 config ARCH_ENABLE_MEMORY_HOTPLUG
398 config ARCH_ENABLE_MEMORY_HOTREMOVE
402 bool "SMT scheduler support"
405 Improves the CPU scheduler's decision making when dealing with
406 Intel IA64 chips with MultiThreading at a cost of slightly increased
407 overhead in some places. If unsure say N here.
409 config PERMIT_BSP_REMOVE
410 bool "Support removal of Bootstrap Processor"
411 depends on HOTPLUG_CPU
414 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
417 config FORCE_CPEI_RETARGET
418 bool "Force assumption that CPEI can be re-targeted"
419 depends on PERMIT_BSP_REMOVE
422 Say Y if you need to force the assumption that CPEI can be re-targeted to
423 any cpu in the system. This hint is available via ACPI 3.0 specifications.
424 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
425 This option it useful to enable this feature on older BIOS's as well.
426 You can also enable this by using boot command line option force_cpei=1.
428 source "kernel/Kconfig.preempt"
432 config ARCH_SELECT_MEMORY_MODEL
435 config ARCH_DISCONTIGMEM_ENABLE
438 Say Y to support efficient handling of discontiguous physical memory,
439 for architectures which are either NUMA (Non-Uniform Memory Access)
440 or have huge holes in the physical address space for other reasons.
441 See <file:Documentation/vm/numa> for more.
443 config ARCH_FLATMEM_ENABLE
446 config ARCH_SPARSEMEM_ENABLE
448 depends on ARCH_DISCONTIGMEM_ENABLE
449 select SPARSEMEM_VMEMMAP_ENABLE
451 config ARCH_DISCONTIGMEM_DEFAULT
452 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
453 depends on ARCH_DISCONTIGMEM_ENABLE
457 depends on !IA64_HP_SIM && !FLATMEM
458 default y if IA64_SGI_SN2
459 select ACPI_NUMA if ACPI
461 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
462 Access). This option is for configuring high-end multiprocessor
463 server systems. If in doubt, say N.
466 int "Max num nodes shift(3-10)"
469 depends on NEED_MULTIPLE_NODES
471 This option specifies the maximum number of nodes in your SSI system.
472 MAX_NUMNODES will be 2^(This value).
473 If in doubt, use the default.
475 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
476 # VIRTUAL_MEM_MAP has been retained for historical reasons.
477 config VIRTUAL_MEM_MAP
478 bool "Virtual mem map"
479 depends on !SPARSEMEM
480 default y if !IA64_HP_SIM
482 Say Y to compile the kernel with support for a virtual mem map.
483 This code also only takes effect if a memory hole of greater than
484 1 Gb is found during boot. You must turn this option on if you
485 require the DISCONTIGMEM option for your machine. If you are
490 default y if VIRTUAL_MEM_MAP
492 config HAVE_ARCH_EARLY_PFN_TO_NID
493 def_bool NUMA && SPARSEMEM
495 config HAVE_ARCH_NODEDATA_EXTENSION
499 config USE_PERCPU_NUMA_NODE_ID
503 config HAVE_MEMORYLESS_NODES
506 config ARCH_PROC_KCORE_TEXT
508 depends on PROC_KCORE
510 config IA64_MCA_RECOVERY
511 tristate "MCA recovery from errors other than TLB."
514 bool "Performance monitor support"
516 Selects whether support for the IA-64 performance monitor hardware
517 is included in the kernel. This makes some kernel data-structures a
518 little bigger and slows down execution a bit, but it is generally
519 a good idea to turn this on. If you're unsure, say Y.
522 tristate "/proc/pal support"
524 If you say Y here, you are able to get PAL (Processor Abstraction
525 Layer) information in /proc/pal. This contains useful information
526 about the processors in your systems, such as cache and TLB sizes
527 and the PAL firmware version in use.
529 To use this option, you have to ensure that the "/proc file system
530 support" (CONFIG_PROC_FS) is enabled, too.
532 config IA64_MC_ERR_INJECT
533 tristate "MC error injection support"
535 Adds support for MC error injection. If enabled, the kernel
536 will provide a sysfs interface for user applications to
537 call MC error injection PAL procedures to inject various errors.
538 This is a useful tool for MCA testing.
540 If you're unsure, do not select this option.
543 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
546 bool "ESI (Extensible SAL Interface) support"
548 If you say Y here, support is built into the kernel to
549 make ESI calls. ESI calls are used to support vendor-specific
550 firmware extensions, such as the ability to inject memory-errors
551 for test-purposes. If you're unsure, say N.
553 config IA64_HP_AML_NFW
554 bool "Support ACPI AML calls to native firmware"
556 This driver installs a global ACPI Operation Region handler for
557 region 0xA1. AML methods can use this OpRegion to call arbitrary
558 native firmware functions. The driver installs the OpRegion
559 handler if there is an HPQ5001 device or if the user supplies
560 the "force" module parameter, e.g., with the "aml_nfw.force"
561 kernel command line option.
563 source "drivers/sn/Kconfig"
566 bool "kexec system call (EXPERIMENTAL)"
567 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
569 kexec is a system call that implements the ability to shutdown your
570 current kernel, and to start another kernel. It is like a reboot
571 but it is independent of the system firmware. And like a reboot
572 you can start any kernel with it, not just Linux.
574 The name comes from the similarity to the exec system call.
576 It is an ongoing process to be certain the hardware in a machine
577 is properly shutdown, so do not be surprised if this code does not
578 initially work for you. It may help to enable device hotplugging
579 support. As of this writing the exact hardware interface is
580 strongly in flux, so no good recommendation can be made.
583 bool "kernel crash dumps"
584 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
586 Generate crash dump after being started by kexec.
588 source "drivers/firmware/Kconfig"
590 source "fs/Kconfig.binfmt"
594 menu "Power management and ACPI options"
596 source "kernel/power/Kconfig"
598 source "drivers/acpi/Kconfig"
602 source "arch/ia64/kernel/cpufreq/Kconfig"
610 menu "Bus options (PCI, PCMCIA)"
615 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
616 here unless you are using a simulator without PCI support.
624 source "drivers/pci/pcie/Kconfig"
626 source "drivers/pci/Kconfig"
628 source "drivers/pci/hotplug/Kconfig"
630 source "drivers/pcmcia/Kconfig"
638 source "drivers/Kconfig"
640 source "arch/ia64/hp/sim/Kconfig"
643 tristate "Memory special operations driver"
645 select IA64_UNCACHED_ALLOCATOR
647 If you have an ia64 and you want to enable memory special
648 operations support (formerly known as fetchop), say Y here,
653 source "arch/ia64/Kconfig.debug"
655 source "security/Kconfig"
657 source "crypto/Kconfig"
659 source "arch/ia64/kvm/Kconfig"
664 def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)