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
27 The Itanium Processor Family is Intel's 64-bit successor to
28 the 32-bit X86 line. The IA-64 Linux project has a home
29 page at <http://www.linuxia64.org/> and a mailing list at
30 <linux-ia64@vger.kernel.org>.
34 select ATA_NONSTANDARD if ATA
39 depends on !IA64_SGI_SN2
49 config NEED_DMA_MAP_STATE
52 config NEED_SG_DMA_LENGTH
58 config GENERIC_LOCKBREAK
61 config RWSEM_XCHGADD_ALGORITHM
65 config HUGETLB_PAGE_SIZE_VARIABLE
67 depends on HUGETLB_PAGE
70 config GENERIC_FIND_NEXT_BIT
74 config GENERIC_CALIBRATE_DELAY
82 config GENERIC_TIME_VSYSCALL
86 config HAVE_SETUP_PER_CPU_AREA
101 config SCHED_OMIT_FRAME_POINTER
105 config IA64_UNCACHED_ALLOCATOR
107 select GENERIC_ALLOCATOR
109 config ARCH_USES_PG_UNCACHED
111 depends on IA64_UNCACHED_ALLOCATOR
117 menuconfig PARAVIRT_GUEST
118 bool "Paravirtualized guest support"
120 Say Y here to get to see options related to running Linux under
121 various hypervisors. This option alone does not add any kernel code.
123 If you say N, all options in this submenu will be skipped and disabled.
128 bool "Enable paravirtualization code"
129 depends on PARAVIRT_GUEST
134 This changes the kernel so it can modify itself when it is run
135 under a hypervisor, potentially improving performance significantly
136 over full virtualization. However, when run without a hypervisor
137 the kernel is theoretically slower and slightly larger.
140 source "arch/ia64/xen/Kconfig"
156 This selects the system type of your hardware. A "generic" kernel
157 will run on any supported IA-64 system. However, if you configure
158 a kernel for your specific system, it will be faster and smaller.
160 generic For any supported IA-64 system
161 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
162 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
163 HP-zx1/sx1000 For HP systems
164 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
165 SGI-SN2 For SGI Altix systems
166 SGI-UV For SGI UV systems
167 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
168 Xen-domU For xen domU system
170 If you don't know what to do, choose "generic".
177 bool "DIG+Intel+IOMMU"
184 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
185 support for the HP I/O MMU.
187 config IA64_HP_ZX1_SWIOTLB
188 bool "HP-zx1/sx1000 with software I/O TLB"
191 Build a kernel that runs on HP zx1 and sx1000 systems even when they
192 have broken PCI devices which cannot DMA to full 32 bits. Apart
193 from support for the HP I/O MMU, this includes support for the software
194 I/O TLB, which allows supporting the broken devices at the expense of
195 wasting some kernel memory (about 2MB by default).
202 Selecting this option will optimize the kernel for use on sn2 based
203 systems, but the resulting kernel binary will not run on other
204 types of ia64 systems. If you have an SGI Altix system, it's safe
205 to select this option. If in doubt, select ia64 generic support
214 Selecting this option will optimize the kernel for use on UV based
215 systems, but the resulting kernel binary will not run on other
216 types of ia64 systems. If you have an SGI UV system, it's safe
217 to select this option. If in doubt, select ia64 generic support
224 config IA64_XEN_GUEST
229 Build a kernel that runs on Xen guest domain. At this moment only
230 16KB page size in supported.
235 prompt "Processor type"
241 Select your IA-64 processor type. The default is Itanium.
242 This choice is safe for all IA-64 systems, but may not perform
243 optimally on systems with, say, Itanium 2 or newer processors.
248 Select this to configure for an Itanium 2 (McKinley) processor.
253 prompt "Kernel page size"
254 default IA64_PAGE_SIZE_16KB
256 config IA64_PAGE_SIZE_4KB
259 This lets you select the page size of the kernel. For best IA-64
260 performance, a page size of 8KB or 16KB is recommended. For best
261 IA-32 compatibility, a page size of 4KB should be selected (the vast
262 majority of IA-32 binaries work perfectly fine with a larger page
263 size). For Itanium 2 or newer systems, a page size of 64KB can also
266 4KB For best IA-32 compatibility
267 8KB For best IA-64 performance
268 16KB For best IA-64 performance
269 64KB Requires Itanium 2 or newer processor.
271 If you don't know what to do, choose 16KB.
273 config IA64_PAGE_SIZE_8KB
276 config IA64_PAGE_SIZE_16KB
279 config IA64_PAGE_SIZE_64KB
286 prompt "Page Table Levels"
293 depends on !IA64_PAGE_SIZE_64KB
304 source kernel/Kconfig.hz
312 # align cache-sensitive data to 128 bytes
313 config IA64_L1_CACHE_SHIFT
315 default "7" if MCKINLEY
316 default "6" if ITANIUM
319 bool "Cyclone (EXA) Time Source support"
321 Say Y here to enable support for IBM EXA Cyclone time source.
322 If you're unsure, answer N.
326 depends on !IA64_HP_SIM
329 config FORCE_MAX_ZONEORDER
330 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
331 range 11 17 if !HUGETLB_PAGE
332 default "17" if HUGETLB_PAGE
335 config VIRT_CPU_ACCOUNTING
336 bool "Deterministic task and CPU time accounting"
339 Select this option to enable more accurate task and CPU time
340 accounting. This is done by reading a CPU counter on each
341 kernel entry and exit and on transitions within the kernel
342 between system, softirq and hardirq state, so there is a
343 small performance impact.
344 If in doubt, say N here.
347 bool "Symmetric multi-processing support"
348 select USE_GENERIC_SMP_HELPERS
350 This enables support for systems with more than one CPU. If you have
351 a system with only one CPU, say N. If you have a system with more
354 If you say N here, the kernel will run on single and multiprocessor
355 systems, but will use only one CPU of a multiprocessor system. If
356 you say Y here, the kernel will run on many, but not all,
357 single processor systems. On a single processor system, the kernel
358 will run faster if you say N here.
360 See also the SMP-HOWTO available at
361 <http://www.tldp.org/docs.html#howto>.
363 If you don't know what to do here, say N.
366 int "Maximum number of CPUs (2-4096)"
371 You should set this to the number of CPUs in your system, but
372 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
373 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
374 than 64 will cause the use of a CPU mask array, causing a small
378 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
379 depends on SMP && EXPERIMENTAL
383 Say Y here to experiment with turning CPUs off and on. CPUs
384 can be controlled through /sys/devices/system/cpu/cpu#.
385 Say N if you want to disable CPU hotplug.
387 config ARCH_ENABLE_MEMORY_HOTPLUG
390 config ARCH_ENABLE_MEMORY_HOTREMOVE
394 bool "SMT scheduler support"
397 Improves the CPU scheduler's decision making when dealing with
398 Intel IA64 chips with MultiThreading at a cost of slightly increased
399 overhead in some places. If unsure say N here.
401 config PERMIT_BSP_REMOVE
402 bool "Support removal of Bootstrap Processor"
403 depends on HOTPLUG_CPU
406 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
409 config FORCE_CPEI_RETARGET
410 bool "Force assumption that CPEI can be re-targetted"
411 depends on PERMIT_BSP_REMOVE
414 Say Y if you need to force the assumption that CPEI can be re-targetted to
415 any cpu in the system. This hint is available via ACPI 3.0 specifications.
416 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
417 This option it useful to enable this feature on older BIOS's as well.
418 You can also enable this by using boot command line option force_cpei=1.
420 source "kernel/Kconfig.preempt"
424 config ARCH_SELECT_MEMORY_MODEL
427 config ARCH_DISCONTIGMEM_ENABLE
430 Say Y to support efficient handling of discontiguous physical memory,
431 for architectures which are either NUMA (Non-Uniform Memory Access)
432 or have huge holes in the physical address space for other reasons.
433 See <file:Documentation/vm/numa> for more.
435 config ARCH_FLATMEM_ENABLE
438 config ARCH_SPARSEMEM_ENABLE
440 depends on ARCH_DISCONTIGMEM_ENABLE
441 select SPARSEMEM_VMEMMAP_ENABLE
443 config ARCH_DISCONTIGMEM_DEFAULT
444 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
445 depends on ARCH_DISCONTIGMEM_ENABLE
449 depends on !IA64_HP_SIM && !FLATMEM
450 default y if IA64_SGI_SN2
451 select ACPI_NUMA if ACPI
453 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
454 Access). This option is for configuring high-end multiprocessor
455 server systems. If in doubt, say N.
458 int "Max num nodes shift(3-10)"
461 depends on NEED_MULTIPLE_NODES
463 This option specifies the maximum number of nodes in your SSI system.
464 MAX_NUMNODES will be 2^(This value).
465 If in doubt, use the default.
467 config ARCH_POPULATES_NODE_MAP
470 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
471 # VIRTUAL_MEM_MAP has been retained for historical reasons.
472 config VIRTUAL_MEM_MAP
473 bool "Virtual mem map"
474 depends on !SPARSEMEM
475 default y if !IA64_HP_SIM
477 Say Y to compile the kernel with support for a virtual mem map.
478 This code also only takes effect if a memory hole of greater than
479 1 Gb is found during boot. You must turn this option on if you
480 require the DISCONTIGMEM option for your machine. If you are
485 default y if VIRTUAL_MEM_MAP
487 config HAVE_ARCH_EARLY_PFN_TO_NID
488 def_bool NUMA && SPARSEMEM
490 config HAVE_ARCH_NODEDATA_EXTENSION
494 config USE_PERCPU_NUMA_NODE_ID
498 config HAVE_MEMORYLESS_NODES
502 config ARCH_PROC_KCORE_TEXT
504 depends on PROC_KCORE
506 config IA64_MCA_RECOVERY
507 tristate "MCA recovery from errors other than TLB."
510 bool "Performance monitor support"
512 Selects whether support for the IA-64 performance monitor hardware
513 is included in the kernel. This makes some kernel data-structures a
514 little bigger and slows down execution a bit, but it is generally
515 a good idea to turn this on. If you're unsure, say Y.
518 tristate "/proc/pal support"
520 If you say Y here, you are able to get PAL (Processor Abstraction
521 Layer) information in /proc/pal. This contains useful information
522 about the processors in your systems, such as cache and TLB sizes
523 and the PAL firmware version in use.
525 To use this option, you have to ensure that the "/proc file system
526 support" (CONFIG_PROC_FS) is enabled, too.
528 config IA64_MC_ERR_INJECT
529 tristate "MC error injection support"
531 Adds support for MC error injection. If enabled, the kernel
532 will provide a sysfs interface for user applications to
533 call MC error injection PAL procedures to inject various errors.
534 This is a useful tool for MCA testing.
536 If you're unsure, do not select this option.
539 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
542 bool "ESI (Extensible SAL Interface) support"
544 If you say Y here, support is built into the kernel to
545 make ESI calls. ESI calls are used to support vendor-specific
546 firmware extensions, such as the ability to inject memory-errors
547 for test-purposes. If you're unsure, say N.
549 config IA64_HP_AML_NFW
550 bool "Support ACPI AML calls to native firmware"
552 This driver installs a global ACPI Operation Region handler for
553 region 0xA1. AML methods can use this OpRegion to call arbitrary
554 native firmware functions. The driver installs the OpRegion
555 handler if there is an HPQ5001 device or if the user supplies
556 the "force" module parameter, e.g., with the "aml_nfw.force"
557 kernel command line option.
559 source "drivers/sn/Kconfig"
562 bool "kexec system call (EXPERIMENTAL)"
563 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
565 kexec is a system call that implements the ability to shutdown your
566 current kernel, and to start another kernel. It is like a reboot
567 but it is independent of the system firmware. And like a reboot
568 you can start any kernel with it, not just Linux.
570 The name comes from the similarity to the exec system call.
572 It is an ongoing process to be certain the hardware in a machine
573 is properly shutdown, so do not be surprised if this code does not
574 initially work for you. It may help to enable device hotplugging
575 support. As of this writing the exact hardware interface is
576 strongly in flux, so no good recommendation can be made.
579 bool "kernel crash dumps"
580 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
582 Generate crash dump after being started by kexec.
584 source "drivers/firmware/Kconfig"
586 source "fs/Kconfig.binfmt"
590 menu "Power management and ACPI options"
592 source "kernel/power/Kconfig"
594 source "drivers/acpi/Kconfig"
598 source "arch/ia64/kernel/cpufreq/Kconfig"
606 menu "Bus options (PCI, PCMCIA)"
611 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
612 here unless you are using a simulator without PCI support.
620 source "drivers/pci/pcie/Kconfig"
622 source "drivers/pci/Kconfig"
624 source "drivers/pci/hotplug/Kconfig"
626 source "drivers/pcmcia/Kconfig"
629 bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
630 depends on IA64_GENERIC && ACPI && EXPERIMENTAL
632 DMA remapping (DMAR) devices support enables independent address
633 translations for Direct Memory Access (DMA) from devices.
634 These DMA remapping devices are reported via ACPI tables
635 and include PCI device scope covered by these DMA
638 config DMAR_DEFAULT_ON
640 prompt "Enable DMA Remapping Devices by default"
643 Selecting this option will enable a DMAR device at boot time if
644 one is found. If this option is not selected, DMAR support can
645 be enabled by passing intel_iommu=on to the kernel. It is
646 recommended you say N here while the DMAR code remains
655 source "drivers/Kconfig"
657 source "arch/ia64/hp/sim/Kconfig"
660 tristate "Memory special operations driver"
662 select IA64_UNCACHED_ALLOCATOR
664 If you have an ia64 and you want to enable memory special
665 operations support (formerly known as fetchop), say Y here,
670 source "arch/ia64/Kconfig.debug"
672 source "security/Kconfig"
674 source "crypto/Kconfig"
676 source "arch/ia64/kvm/Kconfig"
681 # Use the generic interrupt handling code in kernel/irq/:
683 config GENERIC_HARDIRQS
687 config GENERIC_IRQ_PROBE
691 config GENERIC_PENDING_IRQ
693 depends on GENERIC_HARDIRQS && SMP
701 def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)