3 source "kernel/Kconfig.freezer"
5 menu "Processor type and features"
9 select ARCH_MIGHT_HAVE_PC_PARPORT
10 select PCI if (!IA64_HP_SIM)
11 select ACPI if (!IA64_HP_SIM)
12 select PM if (!IA64_HP_SIM)
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
26 select HAVE_MEMBLOCK_NODE_MAP
27 select HAVE_VIRT_CPU_ACCOUNTING
29 select ARCH_DISCARD_MEMBLOCK
30 select GENERIC_IRQ_PROBE
31 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_OLD
42 select SYSCTL_ARCH_UNALIGN_NO_WARN
43 select HAVE_MOD_ARCH_SPECIFIC
44 select MODULES_USE_ELF_RELA
45 select ARCH_USE_CMPXCHG_LOCKREF
48 The Itanium Processor Family is Intel's 64-bit successor to
49 the 32-bit X86 line. The IA-64 Linux project has a home
50 page at <http://www.linuxia64.org/> and a mailing list at
51 <linux-ia64@vger.kernel.org>.
55 select ATA_NONSTANDARD if ATA
60 depends on !IA64_SGI_SN2
70 config ARCH_DMA_ADDR_T_64BIT
73 config NEED_DMA_MAP_STATE
76 config NEED_SG_DMA_LENGTH
82 config STACKTRACE_SUPPORT
85 config GENERIC_LOCKBREAK
88 config RWSEM_XCHGADD_ALGORITHM
92 config HUGETLB_PAGE_SIZE_VARIABLE
94 depends on HUGETLB_PAGE
97 config GENERIC_CALIBRATE_DELAY
101 config HAVE_SETUP_PER_CPU_AREA
113 config SCHED_OMIT_FRAME_POINTER
117 config IA64_UNCACHED_ALLOCATOR
119 select GENERIC_ALLOCATOR
121 config ARCH_USES_PG_UNCACHED
123 depends on IA64_UNCACHED_ALLOCATOR
129 menuconfig PARAVIRT_GUEST
130 bool "Paravirtualized guest support"
133 Say Y here to get to see options related to running Linux under
134 various hypervisors. This option alone does not add any kernel code.
136 If you say N, all options in this submenu will be skipped and disabled.
141 bool "Enable paravirtualization code"
142 depends on PARAVIRT_GUEST
145 This changes the kernel so it can modify itself when it is run
146 under a hypervisor, potentially improving performance significantly
147 over full virtualization. However, when run without a hypervisor
148 the kernel is theoretically slower and slightly larger.
151 source "arch/ia64/xen/Kconfig"
166 This selects the system type of your hardware. A "generic" kernel
167 will run on any supported IA-64 system. However, if you configure
168 a kernel for your specific system, it will be faster and smaller.
170 generic For any supported IA-64 system
171 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
172 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
173 HP-zx1/sx1000 For HP systems
174 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
175 SGI-SN2 For SGI Altix systems
176 SGI-UV For SGI UV systems
177 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
178 Xen-domU For xen domU system
180 If you don't know what to do, choose "generic".
187 bool "DIG+Intel+IOMMU"
194 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
195 support for the HP I/O MMU.
197 config IA64_HP_ZX1_SWIOTLB
198 bool "HP-zx1/sx1000 with software I/O TLB"
201 Build a kernel that runs on HP zx1 and sx1000 systems even when they
202 have broken PCI devices which cannot DMA to full 32 bits. Apart
203 from support for the HP I/O MMU, this includes support for the software
204 I/O TLB, which allows supporting the broken devices at the expense of
205 wasting some kernel memory (about 2MB by default).
212 Selecting this option will optimize the kernel for use on sn2 based
213 systems, but the resulting kernel binary will not run on other
214 types of ia64 systems. If you have an SGI Altix system, it's safe
215 to select this option. If in doubt, select ia64 generic support
224 Selecting this option will optimize the kernel for use on UV based
225 systems, but the resulting kernel binary will not run on other
226 types of ia64 systems. If you have an SGI UV system, it's safe
227 to select this option. If in doubt, select ia64 generic support
234 config IA64_XEN_GUEST
239 Build a kernel that runs on Xen guest domain. At this moment only
240 16KB page size in supported.
245 prompt "Processor type"
251 Select your IA-64 processor type. The default is Itanium.
252 This choice is safe for all IA-64 systems, but may not perform
253 optimally on systems with, say, Itanium 2 or newer processors.
258 Select this to configure for an Itanium 2 (McKinley) processor.
263 prompt "Kernel page size"
264 default IA64_PAGE_SIZE_16KB
266 config IA64_PAGE_SIZE_4KB
269 This lets you select the page size of the kernel. For best IA-64
270 performance, a page size of 8KB or 16KB is recommended. For best
271 IA-32 compatibility, a page size of 4KB should be selected (the vast
272 majority of IA-32 binaries work perfectly fine with a larger page
273 size). For Itanium 2 or newer systems, a page size of 64KB can also
276 4KB For best IA-32 compatibility
277 8KB For best IA-64 performance
278 16KB For best IA-64 performance
279 64KB Requires Itanium 2 or newer processor.
281 If you don't know what to do, choose 16KB.
283 config IA64_PAGE_SIZE_8KB
286 config IA64_PAGE_SIZE_16KB
289 config IA64_PAGE_SIZE_64KB
296 prompt "Page Table Levels"
303 depends on !IA64_PAGE_SIZE_64KB
314 source kernel/Kconfig.hz
322 # align cache-sensitive data to 128 bytes
323 config IA64_L1_CACHE_SHIFT
325 default "7" if MCKINLEY
326 default "6" if ITANIUM
329 bool "Cyclone (EXA) Time Source support"
331 Say Y here to enable support for IBM EXA Cyclone time source.
332 If you're unsure, answer N.
336 depends on !IA64_HP_SIM
339 config FORCE_MAX_ZONEORDER
340 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
341 range 11 17 if !HUGETLB_PAGE
342 default "17" if HUGETLB_PAGE
346 bool "Symmetric multi-processing support"
348 This enables support for systems with more than one CPU. If you have
349 a system with only one CPU, say N. If you have a system with more
352 If you say N here, the kernel will run on single and multiprocessor
353 systems, but will use only one CPU of a multiprocessor system. If
354 you say Y here, the kernel will run on many, but not all,
355 single processor systems. On a single processor system, the kernel
356 will run faster if you say N here.
358 See also the SMP-HOWTO available at
359 <http://www.tldp.org/docs.html#howto>.
361 If you don't know what to do here, say N.
364 int "Maximum number of CPUs (2-4096)"
369 You should set this to the number of CPUs in your system, but
370 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
371 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
372 than 64 will cause the use of a CPU mask array, causing a small
376 bool "Support for hot-pluggable CPUs"
380 Say Y here to experiment with turning CPUs off and on. CPUs
381 can be controlled through /sys/devices/system/cpu/cpu#.
382 Say N if you want to disable CPU hotplug.
384 config ARCH_ENABLE_MEMORY_HOTPLUG
387 config ARCH_ENABLE_MEMORY_HOTREMOVE
391 bool "SMT scheduler support"
394 Improves the CPU scheduler's decision making when dealing with
395 Intel IA64 chips with MultiThreading at a cost of slightly increased
396 overhead in some places. If unsure say N here.
398 config PERMIT_BSP_REMOVE
399 bool "Support removal of Bootstrap Processor"
400 depends on HOTPLUG_CPU
403 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
406 config FORCE_CPEI_RETARGET
407 bool "Force assumption that CPEI can be re-targeted"
408 depends on PERMIT_BSP_REMOVE
411 Say Y if you need to force the assumption that CPEI can be re-targeted to
412 any cpu in the system. This hint is available via ACPI 3.0 specifications.
413 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
414 This option it useful to enable this feature on older BIOS's as well.
415 You can also enable this by using boot command line option force_cpei=1.
417 source "kernel/Kconfig.preempt"
421 config ARCH_SELECT_MEMORY_MODEL
424 config ARCH_DISCONTIGMEM_ENABLE
427 Say Y to support efficient handling of discontiguous physical memory,
428 for architectures which are either NUMA (Non-Uniform Memory Access)
429 or have huge holes in the physical address space for other reasons.
430 See <file:Documentation/vm/numa> for more.
432 config ARCH_FLATMEM_ENABLE
435 config ARCH_SPARSEMEM_ENABLE
437 depends on ARCH_DISCONTIGMEM_ENABLE
438 select SPARSEMEM_VMEMMAP_ENABLE
440 config ARCH_DISCONTIGMEM_DEFAULT
441 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
442 depends on ARCH_DISCONTIGMEM_ENABLE
446 depends on !IA64_HP_SIM && !FLATMEM
447 default y if IA64_SGI_SN2
448 select ACPI_NUMA if ACPI
450 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
451 Access). This option is for configuring high-end multiprocessor
452 server systems. If in doubt, say N.
455 int "Max num nodes shift(3-10)"
458 depends on NEED_MULTIPLE_NODES
460 This option specifies the maximum number of nodes in your SSI system.
461 MAX_NUMNODES will be 2^(This value).
462 If in doubt, use the default.
464 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
465 # VIRTUAL_MEM_MAP has been retained for historical reasons.
466 config VIRTUAL_MEM_MAP
467 bool "Virtual mem map"
468 depends on !SPARSEMEM
469 default y if !IA64_HP_SIM
471 Say Y to compile the kernel with support for a virtual mem map.
472 This code also only takes effect if a memory hole of greater than
473 1 Gb is found during boot. You must turn this option on if you
474 require the DISCONTIGMEM option for your machine. If you are
479 default y if VIRTUAL_MEM_MAP
481 config HAVE_ARCH_EARLY_PFN_TO_NID
482 def_bool NUMA && SPARSEMEM
484 config HAVE_ARCH_NODEDATA_EXTENSION
488 config USE_PERCPU_NUMA_NODE_ID
492 config HAVE_MEMORYLESS_NODES
495 config ARCH_PROC_KCORE_TEXT
497 depends on PROC_KCORE
499 config IA64_MCA_RECOVERY
500 tristate "MCA recovery from errors other than TLB."
503 bool "Performance monitor support"
505 Selects whether support for the IA-64 performance monitor hardware
506 is included in the kernel. This makes some kernel data-structures a
507 little bigger and slows down execution a bit, but it is generally
508 a good idea to turn this on. If you're unsure, say Y.
511 tristate "/proc/pal support"
513 If you say Y here, you are able to get PAL (Processor Abstraction
514 Layer) information in /proc/pal. This contains useful information
515 about the processors in your systems, such as cache and TLB sizes
516 and the PAL firmware version in use.
518 To use this option, you have to ensure that the "/proc file system
519 support" (CONFIG_PROC_FS) is enabled, too.
521 config IA64_MC_ERR_INJECT
522 tristate "MC error injection support"
524 Adds support for MC error injection. If enabled, the kernel
525 will provide a sysfs interface for user applications to
526 call MC error injection PAL procedures to inject various errors.
527 This is a useful tool for MCA testing.
529 If you're unsure, do not select this option.
532 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
535 bool "ESI (Extensible SAL Interface) support"
537 If you say Y here, support is built into the kernel to
538 make ESI calls. ESI calls are used to support vendor-specific
539 firmware extensions, such as the ability to inject memory-errors
540 for test-purposes. If you're unsure, say N.
542 config IA64_HP_AML_NFW
543 bool "Support ACPI AML calls to native firmware"
545 This driver installs a global ACPI Operation Region handler for
546 region 0xA1. AML methods can use this OpRegion to call arbitrary
547 native firmware functions. The driver installs the OpRegion
548 handler if there is an HPQ5001 device or if the user supplies
549 the "force" module parameter, e.g., with the "aml_nfw.force"
550 kernel command line option.
552 source "drivers/sn/Kconfig"
555 bool "kexec system call"
556 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
558 kexec is a system call that implements the ability to shutdown your
559 current kernel, and to start another kernel. It is like a reboot
560 but it is independent of the system firmware. And like a reboot
561 you can start any kernel with it, not just Linux.
563 The name comes from the similarity to the exec system call.
565 It is an ongoing process to be certain the hardware in a machine
566 is properly shutdown, so do not be surprised if this code does not
567 initially work for you. As of this writing the exact hardware
568 interface is strongly in flux, so no good recommendation can be
572 bool "kernel crash dumps"
573 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
575 Generate crash dump after being started by kexec.
577 source "drivers/firmware/Kconfig"
579 source "fs/Kconfig.binfmt"
583 menu "Power management and ACPI options"
585 source "kernel/power/Kconfig"
587 source "drivers/acpi/Kconfig"
590 menu "CPU Frequency scaling"
591 source "drivers/cpufreq/Kconfig"
599 menu "Bus options (PCI, PCMCIA)"
604 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
605 here unless you are using a simulator without PCI support.
613 source "drivers/pci/pcie/Kconfig"
615 source "drivers/pci/Kconfig"
617 source "drivers/pci/hotplug/Kconfig"
619 source "drivers/pcmcia/Kconfig"
627 source "drivers/Kconfig"
629 source "arch/ia64/hp/sim/Kconfig"
632 tristate "Memory special operations driver"
634 select IA64_UNCACHED_ALLOCATOR
636 If you have an ia64 and you want to enable memory special
637 operations support (formerly known as fetchop), say Y here,
642 source "arch/ia64/Kconfig.debug"
644 source "security/Kconfig"
646 source "crypto/Kconfig"
648 source "arch/ia64/kvm/Kconfig"
653 def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)