3 source "kernel/Kconfig.freezer"
5 menu "Processor type and features"
9 select ARCH_MIGHT_HAVE_PC_PARPORT
10 select ARCH_MIGHT_HAVE_PC_SERIO
11 select PCI if (!IA64_HP_SIM)
12 select ACPI if (!IA64_HP_SIM)
13 select PM if (!IA64_HP_SIM)
14 select HAVE_UNSTABLE_SCHED_CLOCK
18 select HAVE_KRETPROBES
19 select HAVE_FTRACE_MCOUNT_RECORD
20 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
21 select HAVE_FUNCTION_TRACER
25 select HAVE_ARCH_TRACEHOOK
26 select HAVE_DMA_API_DEBUG
28 select HAVE_MEMBLOCK_NODE_MAP
29 select HAVE_VIRT_CPU_ACCOUNTING
31 select ARCH_DISCARD_MEMBLOCK
32 select GENERIC_IRQ_PROBE
33 select GENERIC_PENDING_IRQ if SMP
34 select GENERIC_IRQ_SHOW
35 select ARCH_WANT_OPTIONAL_GPIOLIB
36 select ARCH_HAVE_NMI_SAFE_CMPXCHG
38 select GENERIC_SMP_IDLE_THREAD
40 select ARCH_TASK_STRUCT_ALLOCATOR
41 select ARCH_THREAD_INFO_ALLOCATOR
42 select ARCH_CLOCKSOURCE_DATA
43 select GENERIC_TIME_VSYSCALL_OLD
44 select SYSCTL_ARCH_UNALIGN_NO_WARN
45 select HAVE_MOD_ARCH_SPECIFIC
46 select MODULES_USE_ELF_RELA
47 select ARCH_USE_CMPXCHG_LOCKREF
50 The Itanium Processor Family is Intel's 64-bit successor to
51 the 32-bit X86 line. The IA-64 Linux project has a home
52 page at <http://www.linuxia64.org/> and a mailing list at
53 <linux-ia64@vger.kernel.org>.
57 select ATA_NONSTANDARD if ATA
62 depends on !IA64_SGI_SN2
72 config ARCH_DMA_ADDR_T_64BIT
75 config NEED_DMA_MAP_STATE
78 config NEED_SG_DMA_LENGTH
84 config STACKTRACE_SUPPORT
87 config GENERIC_LOCKBREAK
90 config RWSEM_XCHGADD_ALGORITHM
94 config HUGETLB_PAGE_SIZE_VARIABLE
96 depends on HUGETLB_PAGE
99 config GENERIC_CALIBRATE_DELAY
103 config HAVE_SETUP_PER_CPU_AREA
109 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
116 config SCHED_OMIT_FRAME_POINTER
120 config IA64_UNCACHED_ALLOCATOR
122 select GENERIC_ALLOCATOR
124 config ARCH_USES_PG_UNCACHED
126 depends on IA64_UNCACHED_ALLOCATOR
132 menuconfig PARAVIRT_GUEST
133 bool "Paravirtualized guest support"
136 Say Y here to get to see options related to running Linux under
137 various hypervisors. This option alone does not add any kernel code.
139 If you say N, all options in this submenu will be skipped and disabled.
144 bool "Enable paravirtualization code"
145 depends on PARAVIRT_GUEST
148 This changes the kernel so it can modify itself when it is run
149 under a hypervisor, potentially improving performance significantly
150 over full virtualization. However, when run without a hypervisor
151 the kernel is theoretically slower and slightly larger.
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/>
179 If you don't know what to do, choose "generic".
186 bool "DIG+Intel+IOMMU"
193 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
194 support for the HP I/O MMU.
196 config IA64_HP_ZX1_SWIOTLB
197 bool "HP-zx1/sx1000 with software I/O TLB"
200 Build a kernel that runs on HP zx1 and sx1000 systems even when they
201 have broken PCI devices which cannot DMA to full 32 bits. Apart
202 from support for the HP I/O MMU, this includes support for the software
203 I/O TLB, which allows supporting the broken devices at the expense of
204 wasting some kernel memory (about 2MB by default).
211 Selecting this option will optimize the kernel for use on sn2 based
212 systems, but the resulting kernel binary will not run on other
213 types of ia64 systems. If you have an SGI Altix system, it's safe
214 to select this option. If in doubt, select ia64 generic support
223 Selecting this option will optimize the kernel for use on UV based
224 systems, but the resulting kernel binary will not run on other
225 types of ia64 systems. If you have an SGI UV system, it's safe
226 to select this option. If in doubt, select ia64 generic support
236 prompt "Processor type"
242 Select your IA-64 processor type. The default is Itanium.
243 This choice is safe for all IA-64 systems, but may not perform
244 optimally on systems with, say, Itanium 2 or newer processors.
249 Select this to configure for an Itanium 2 (McKinley) processor.
254 prompt "Kernel page size"
255 default IA64_PAGE_SIZE_16KB
257 config IA64_PAGE_SIZE_4KB
260 This lets you select the page size of the kernel. For best IA-64
261 performance, a page size of 8KB or 16KB is recommended. For best
262 IA-32 compatibility, a page size of 4KB should be selected (the vast
263 majority of IA-32 binaries work perfectly fine with a larger page
264 size). For Itanium 2 or newer systems, a page size of 64KB can also
267 4KB For best IA-32 compatibility
268 8KB For best IA-64 performance
269 16KB For best IA-64 performance
270 64KB Requires Itanium 2 or newer processor.
272 If you don't know what to do, choose 16KB.
274 config IA64_PAGE_SIZE_8KB
277 config IA64_PAGE_SIZE_16KB
280 config IA64_PAGE_SIZE_64KB
287 prompt "Page Table Levels"
294 depends on !IA64_PAGE_SIZE_64KB
305 source kernel/Kconfig.hz
313 # align cache-sensitive data to 128 bytes
314 config IA64_L1_CACHE_SHIFT
316 default "7" if MCKINLEY
317 default "6" if ITANIUM
320 bool "Cyclone (EXA) Time Source support"
322 Say Y here to enable support for IBM EXA Cyclone time source.
323 If you're unsure, answer N.
327 depends on !IA64_HP_SIM
330 config FORCE_MAX_ZONEORDER
331 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
332 range 11 17 if !HUGETLB_PAGE
333 default "17" if HUGETLB_PAGE
337 bool "Symmetric multi-processing support"
339 This enables support for systems with more than one CPU. If you have
340 a system with only one CPU, say N. If you have a system with more
343 If you say N here, the kernel will run on single and multiprocessor
344 systems, but will use only one CPU of a multiprocessor system. If
345 you say Y here, the kernel will run on many, but not all,
346 single processor systems. On a single processor system, the kernel
347 will run faster if you say N here.
349 See also the SMP-HOWTO available at
350 <http://www.tldp.org/docs.html#howto>.
352 If you don't know what to do here, say N.
355 int "Maximum number of CPUs (2-4096)"
360 You should set this to the number of CPUs in your system, but
361 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
362 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
363 than 64 will cause the use of a CPU mask array, causing a small
367 bool "Support for hot-pluggable CPUs"
371 Say Y here to experiment with turning CPUs off and on. CPUs
372 can be controlled through /sys/devices/system/cpu/cpu#.
373 Say N if you want to disable CPU hotplug.
375 config ARCH_ENABLE_MEMORY_HOTPLUG
378 config ARCH_ENABLE_MEMORY_HOTREMOVE
382 bool "SMT scheduler support"
385 Improves the CPU scheduler's decision making when dealing with
386 Intel IA64 chips with MultiThreading at a cost of slightly increased
387 overhead in some places. If unsure say N here.
389 config PERMIT_BSP_REMOVE
390 bool "Support removal of Bootstrap Processor"
391 depends on HOTPLUG_CPU
394 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
397 config FORCE_CPEI_RETARGET
398 bool "Force assumption that CPEI can be re-targeted"
399 depends on PERMIT_BSP_REMOVE
402 Say Y if you need to force the assumption that CPEI can be re-targeted to
403 any cpu in the system. This hint is available via ACPI 3.0 specifications.
404 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
405 This option it useful to enable this feature on older BIOS's as well.
406 You can also enable this by using boot command line option force_cpei=1.
408 source "kernel/Kconfig.preempt"
412 config ARCH_SELECT_MEMORY_MODEL
415 config ARCH_DISCONTIGMEM_ENABLE
418 Say Y to support efficient handling of discontiguous physical memory,
419 for architectures which are either NUMA (Non-Uniform Memory Access)
420 or have huge holes in the physical address space for other reasons.
421 See <file:Documentation/vm/numa> for more.
423 config ARCH_FLATMEM_ENABLE
426 config ARCH_SPARSEMEM_ENABLE
428 depends on ARCH_DISCONTIGMEM_ENABLE
429 select SPARSEMEM_VMEMMAP_ENABLE
431 config ARCH_DISCONTIGMEM_DEFAULT
432 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
433 depends on ARCH_DISCONTIGMEM_ENABLE
437 depends on !IA64_HP_SIM && !FLATMEM
438 default y if IA64_SGI_SN2
439 select ACPI_NUMA if ACPI
441 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
442 Access). This option is for configuring high-end multiprocessor
443 server systems. If in doubt, say N.
446 int "Max num nodes shift(3-10)"
449 depends on NEED_MULTIPLE_NODES
451 This option specifies the maximum number of nodes in your SSI system.
452 MAX_NUMNODES will be 2^(This value).
453 If in doubt, use the default.
455 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
456 # VIRTUAL_MEM_MAP has been retained for historical reasons.
457 config VIRTUAL_MEM_MAP
458 bool "Virtual mem map"
459 depends on !SPARSEMEM
460 default y if !IA64_HP_SIM
462 Say Y to compile the kernel with support for a virtual mem map.
463 This code also only takes effect if a memory hole of greater than
464 1 Gb is found during boot. You must turn this option on if you
465 require the DISCONTIGMEM option for your machine. If you are
470 default y if VIRTUAL_MEM_MAP
472 config HAVE_ARCH_EARLY_PFN_TO_NID
473 def_bool NUMA && SPARSEMEM
475 config HAVE_ARCH_NODEDATA_EXTENSION
479 config USE_PERCPU_NUMA_NODE_ID
483 config HAVE_MEMORYLESS_NODES
486 config ARCH_PROC_KCORE_TEXT
488 depends on PROC_KCORE
490 config IA64_MCA_RECOVERY
491 tristate "MCA recovery from errors other than TLB."
494 bool "Performance monitor support"
496 Selects whether support for the IA-64 performance monitor hardware
497 is included in the kernel. This makes some kernel data-structures a
498 little bigger and slows down execution a bit, but it is generally
499 a good idea to turn this on. If you're unsure, say Y.
502 tristate "/proc/pal support"
504 If you say Y here, you are able to get PAL (Processor Abstraction
505 Layer) information in /proc/pal. This contains useful information
506 about the processors in your systems, such as cache and TLB sizes
507 and the PAL firmware version in use.
509 To use this option, you have to ensure that the "/proc file system
510 support" (CONFIG_PROC_FS) is enabled, too.
512 config IA64_MC_ERR_INJECT
513 tristate "MC error injection support"
515 Adds support for MC error injection. If enabled, the kernel
516 will provide a sysfs interface for user applications to
517 call MC error injection PAL procedures to inject various errors.
518 This is a useful tool for MCA testing.
520 If you're unsure, do not select this option.
523 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
526 bool "ESI (Extensible SAL Interface) support"
528 If you say Y here, support is built into the kernel to
529 make ESI calls. ESI calls are used to support vendor-specific
530 firmware extensions, such as the ability to inject memory-errors
531 for test-purposes. If you're unsure, say N.
533 config IA64_HP_AML_NFW
534 bool "Support ACPI AML calls to native firmware"
536 This driver installs a global ACPI Operation Region handler for
537 region 0xA1. AML methods can use this OpRegion to call arbitrary
538 native firmware functions. The driver installs the OpRegion
539 handler if there is an HPQ5001 device or if the user supplies
540 the "force" module parameter, e.g., with the "aml_nfw.force"
541 kernel command line option.
543 source "drivers/sn/Kconfig"
546 bool "kexec system call"
547 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
549 kexec is a system call that implements the ability to shutdown your
550 current kernel, and to start another kernel. It is like a reboot
551 but it is independent of the system firmware. And like a reboot
552 you can start any kernel with it, not just Linux.
554 The name comes from the similarity to the exec system call.
556 It is an ongoing process to be certain the hardware in a machine
557 is properly shutdown, so do not be surprised if this code does not
558 initially work for you. As of this writing the exact hardware
559 interface is strongly in flux, so no good recommendation can be
563 bool "kernel crash dumps"
564 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
566 Generate crash dump after being started by kexec.
568 source "drivers/firmware/Kconfig"
570 source "fs/Kconfig.binfmt"
574 menu "Power management and ACPI options"
576 source "kernel/power/Kconfig"
578 source "drivers/acpi/Kconfig"
581 menu "CPU Frequency scaling"
582 source "drivers/cpufreq/Kconfig"
590 menu "Bus options (PCI, PCMCIA)"
595 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
596 here unless you are using a simulator without PCI support.
604 source "drivers/pci/pcie/Kconfig"
606 source "drivers/pci/Kconfig"
608 source "drivers/pci/hotplug/Kconfig"
610 source "drivers/pcmcia/Kconfig"
618 source "drivers/Kconfig"
620 source "arch/ia64/hp/sim/Kconfig"
623 tristate "Memory special operations driver"
625 select IA64_UNCACHED_ALLOCATOR
627 If you have an ia64 and you want to enable memory special
628 operations support (formerly known as fetchop), say Y here,
633 source "arch/ia64/Kconfig.debug"
635 source "security/Kconfig"
637 source "crypto/Kconfig"
639 source "arch/ia64/kvm/Kconfig"
644 def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)