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
26 select GENERIC_IRQ_PROBE
27 select GENERIC_PENDING_IRQ if SMP
29 select GENERIC_IRQ_SHOW
30 select ARCH_WANT_OPTIONAL_GPIOLIB
31 select ARCH_HAVE_NMI_SAFE_CMPXCHG
34 The Itanium Processor Family is Intel's 64-bit successor to
35 the 32-bit X86 line. The IA-64 Linux project has a home
36 page at <http://www.linuxia64.org/> and a mailing list at
37 <linux-ia64@vger.kernel.org>.
41 select ATA_NONSTANDARD if ATA
46 depends on !IA64_SGI_SN2
56 config ARCH_DMA_ADDR_T_64BIT
59 config NEED_DMA_MAP_STATE
62 config NEED_SG_DMA_LENGTH
68 config STACKTRACE_SUPPORT
71 config GENERIC_LOCKBREAK
74 config RWSEM_XCHGADD_ALGORITHM
78 config HUGETLB_PAGE_SIZE_VARIABLE
80 depends on HUGETLB_PAGE
83 config GENERIC_CALIBRATE_DELAY
87 config GENERIC_TIME_VSYSCALL
91 config HAVE_SETUP_PER_CPU_AREA
109 config ARCH_CLOCKSOURCE_DATA
112 config SCHED_OMIT_FRAME_POINTER
116 config IA64_UNCACHED_ALLOCATOR
118 select GENERIC_ALLOCATOR
120 config ARCH_USES_PG_UNCACHED
122 depends on IA64_UNCACHED_ALLOCATOR
128 menuconfig PARAVIRT_GUEST
129 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
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
345 config VIRT_CPU_ACCOUNTING
346 bool "Deterministic task and CPU time accounting"
349 Select this option to enable more accurate task and CPU time
350 accounting. This is done by reading a CPU counter on each
351 kernel entry and exit and on transitions within the kernel
352 between system, softirq and hardirq state, so there is a
353 small performance impact.
354 If in doubt, say N here.
357 bool "Symmetric multi-processing support"
358 select USE_GENERIC_SMP_HELPERS
360 This enables support for systems with more than one CPU. If you have
361 a system with only one CPU, say N. If you have a system with more
364 If you say N here, the kernel will run on single and multiprocessor
365 systems, but will use only one CPU of a multiprocessor system. If
366 you say Y here, the kernel will run on many, but not all,
367 single processor systems. On a single processor system, the kernel
368 will run faster if you say N here.
370 See also the SMP-HOWTO available at
371 <http://www.tldp.org/docs.html#howto>.
373 If you don't know what to do here, say N.
376 int "Maximum number of CPUs (2-4096)"
381 You should set this to the number of CPUs in your system, but
382 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
383 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
384 than 64 will cause the use of a CPU mask array, causing a small
388 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
389 depends on SMP && EXPERIMENTAL
393 Say Y here to experiment with turning CPUs off and on. CPUs
394 can be controlled through /sys/devices/system/cpu/cpu#.
395 Say N if you want to disable CPU hotplug.
397 config ARCH_ENABLE_MEMORY_HOTPLUG
400 config ARCH_ENABLE_MEMORY_HOTREMOVE
404 bool "SMT scheduler support"
407 Improves the CPU scheduler's decision making when dealing with
408 Intel IA64 chips with MultiThreading at a cost of slightly increased
409 overhead in some places. If unsure say N here.
411 config PERMIT_BSP_REMOVE
412 bool "Support removal of Bootstrap Processor"
413 depends on HOTPLUG_CPU
416 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
419 config FORCE_CPEI_RETARGET
420 bool "Force assumption that CPEI can be re-targeted"
421 depends on PERMIT_BSP_REMOVE
424 Say Y if you need to force the assumption that CPEI can be re-targeted to
425 any cpu in the system. This hint is available via ACPI 3.0 specifications.
426 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
427 This option it useful to enable this feature on older BIOS's as well.
428 You can also enable this by using boot command line option force_cpei=1.
430 source "kernel/Kconfig.preempt"
434 config ARCH_SELECT_MEMORY_MODEL
437 config ARCH_DISCONTIGMEM_ENABLE
440 Say Y to support efficient handling of discontiguous physical memory,
441 for architectures which are either NUMA (Non-Uniform Memory Access)
442 or have huge holes in the physical address space for other reasons.
443 See <file:Documentation/vm/numa> for more.
445 config ARCH_FLATMEM_ENABLE
448 config ARCH_SPARSEMEM_ENABLE
450 depends on ARCH_DISCONTIGMEM_ENABLE
451 select SPARSEMEM_VMEMMAP_ENABLE
453 config ARCH_DISCONTIGMEM_DEFAULT
454 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
455 depends on ARCH_DISCONTIGMEM_ENABLE
459 depends on !IA64_HP_SIM && !FLATMEM
460 default y if IA64_SGI_SN2
461 select ACPI_NUMA if ACPI
463 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
464 Access). This option is for configuring high-end multiprocessor
465 server systems. If in doubt, say N.
468 int "Max num nodes shift(3-10)"
471 depends on NEED_MULTIPLE_NODES
473 This option specifies the maximum number of nodes in your SSI system.
474 MAX_NUMNODES will be 2^(This value).
475 If in doubt, use the default.
477 config ARCH_POPULATES_NODE_MAP
480 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
481 # VIRTUAL_MEM_MAP has been retained for historical reasons.
482 config VIRTUAL_MEM_MAP
483 bool "Virtual mem map"
484 depends on !SPARSEMEM
485 default y if !IA64_HP_SIM
487 Say Y to compile the kernel with support for a virtual mem map.
488 This code also only takes effect if a memory hole of greater than
489 1 Gb is found during boot. You must turn this option on if you
490 require the DISCONTIGMEM option for your machine. If you are
495 default y if VIRTUAL_MEM_MAP
497 config HAVE_ARCH_EARLY_PFN_TO_NID
498 def_bool NUMA && SPARSEMEM
500 config HAVE_ARCH_NODEDATA_EXTENSION
504 config USE_PERCPU_NUMA_NODE_ID
508 config HAVE_MEMORYLESS_NODES
511 config ARCH_PROC_KCORE_TEXT
513 depends on PROC_KCORE
515 config IA64_MCA_RECOVERY
516 tristate "MCA recovery from errors other than TLB."
519 bool "Performance monitor support"
521 Selects whether support for the IA-64 performance monitor hardware
522 is included in the kernel. This makes some kernel data-structures a
523 little bigger and slows down execution a bit, but it is generally
524 a good idea to turn this on. If you're unsure, say Y.
527 tristate "/proc/pal support"
529 If you say Y here, you are able to get PAL (Processor Abstraction
530 Layer) information in /proc/pal. This contains useful information
531 about the processors in your systems, such as cache and TLB sizes
532 and the PAL firmware version in use.
534 To use this option, you have to ensure that the "/proc file system
535 support" (CONFIG_PROC_FS) is enabled, too.
537 config IA64_MC_ERR_INJECT
538 tristate "MC error injection support"
540 Adds support for MC error injection. If enabled, the kernel
541 will provide a sysfs interface for user applications to
542 call MC error injection PAL procedures to inject various errors.
543 This is a useful tool for MCA testing.
545 If you're unsure, do not select this option.
548 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
551 bool "ESI (Extensible SAL Interface) support"
553 If you say Y here, support is built into the kernel to
554 make ESI calls. ESI calls are used to support vendor-specific
555 firmware extensions, such as the ability to inject memory-errors
556 for test-purposes. If you're unsure, say N.
558 config IA64_HP_AML_NFW
559 bool "Support ACPI AML calls to native firmware"
561 This driver installs a global ACPI Operation Region handler for
562 region 0xA1. AML methods can use this OpRegion to call arbitrary
563 native firmware functions. The driver installs the OpRegion
564 handler if there is an HPQ5001 device or if the user supplies
565 the "force" module parameter, e.g., with the "aml_nfw.force"
566 kernel command line option.
568 source "drivers/sn/Kconfig"
571 bool "kexec system call (EXPERIMENTAL)"
572 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
574 kexec is a system call that implements the ability to shutdown your
575 current kernel, and to start another kernel. It is like a reboot
576 but it is independent of the system firmware. And like a reboot
577 you can start any kernel with it, not just Linux.
579 The name comes from the similarity to the exec system call.
581 It is an ongoing process to be certain the hardware in a machine
582 is properly shutdown, so do not be surprised if this code does not
583 initially work for you. It may help to enable device hotplugging
584 support. As of this writing the exact hardware interface is
585 strongly in flux, so no good recommendation can be made.
588 bool "kernel crash dumps"
589 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
591 Generate crash dump after being started by kexec.
593 source "drivers/firmware/Kconfig"
595 source "fs/Kconfig.binfmt"
599 menu "Power management and ACPI options"
601 source "kernel/power/Kconfig"
603 source "drivers/acpi/Kconfig"
607 source "arch/ia64/kernel/cpufreq/Kconfig"
615 menu "Bus options (PCI, PCMCIA)"
620 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
621 here unless you are using a simulator without PCI support.
629 source "drivers/pci/pcie/Kconfig"
631 source "drivers/pci/Kconfig"
633 source "drivers/pci/hotplug/Kconfig"
635 source "drivers/pcmcia/Kconfig"
643 source "drivers/Kconfig"
645 source "arch/ia64/hp/sim/Kconfig"
648 tristate "Memory special operations driver"
650 select IA64_UNCACHED_ALLOCATOR
652 If you have an ia64 and you want to enable memory special
653 operations support (formerly known as fetchop), say Y here,
658 source "arch/ia64/Kconfig.debug"
660 source "security/Kconfig"
662 source "crypto/Kconfig"
664 source "arch/ia64/kvm/Kconfig"
669 def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)