1 # SPDX-License-Identifier: GPL-2.0
3 int "Page Table Levels" if !IA64_PAGE_SIZE_64KB
4 range 3 4 if !IA64_PAGE_SIZE_64KB
9 source "kernel/Kconfig.freezer"
11 menu "Processor type and features"
15 select ARCH_MIGHT_HAVE_PC_PARPORT
16 select ARCH_MIGHT_HAVE_PC_SERIO
17 select PCI if (!IA64_HP_SIM)
18 select ACPI if (!IA64_HP_SIM)
19 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
20 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
21 select HAVE_UNSTABLE_SCHED_CLOCK
22 select HAVE_EXIT_THREAD
26 select HAVE_KRETPROBES
27 select HAVE_FTRACE_MCOUNT_RECORD
28 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
29 select HAVE_FUNCTION_TRACER
31 select HAVE_ARCH_TRACEHOOK
33 select HAVE_MEMBLOCK_NODE_MAP
34 select HAVE_VIRT_CPU_ACCOUNTING
35 select ARCH_HAS_DMA_MARK_CLEAN
36 select ARCH_HAS_SG_CHAIN
38 select ARCH_DISCARD_MEMBLOCK
39 select GENERIC_IRQ_PROBE
40 select GENERIC_PENDING_IRQ if SMP
41 select GENERIC_IRQ_SHOW
42 select GENERIC_IRQ_LEGACY
43 select ARCH_HAVE_NMI_SAFE_CMPXCHG
45 select GENERIC_SMP_IDLE_THREAD
46 select ARCH_TASK_STRUCT_ON_STACK
47 select ARCH_TASK_STRUCT_ALLOCATOR
48 select ARCH_THREAD_STACK_ALLOCATOR
49 select ARCH_CLOCKSOURCE_DATA
50 select GENERIC_TIME_VSYSCALL
51 select SYSCTL_ARCH_UNALIGN_NO_WARN
52 select HAVE_MOD_ARCH_SPECIFIC
53 select MODULES_USE_ELF_RELA
54 select ARCH_USE_CMPXCHG_LOCKREF
55 select HAVE_ARCH_AUDITSYSCALL
56 select NEED_DMA_MAP_STATE
57 select NEED_SG_DMA_LENGTH
60 The Itanium Processor Family is Intel's 64-bit successor to
61 the 32-bit X86 line. The IA-64 Linux project has a home
62 page at <http://www.linuxia64.org/> and a mailing list at
63 <linux-ia64@vger.kernel.org>.
67 select ATA_NONSTANDARD if ATA
72 depends on !IA64_SGI_SN2
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
107 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
114 config SCHED_OMIT_FRAME_POINTER
118 config IA64_UNCACHED_ALLOCATOR
120 select GENERIC_ALLOCATOR
122 config ARCH_USES_PG_UNCACHED
124 depends on IA64_UNCACHED_ALLOCATOR
141 This selects the system type of your hardware. A "generic" kernel
142 will run on any supported IA-64 system. However, if you configure
143 a kernel for your specific system, it will be faster and smaller.
145 generic For any supported IA-64 system
146 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
147 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
148 HP-zx1/sx1000 For HP systems
149 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
150 SGI-SN2 For SGI Altix systems
151 SGI-UV For SGI UV systems
152 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
154 If you don't know what to do, choose "generic".
161 bool "DIG+Intel+IOMMU"
168 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
169 support for the HP I/O MMU.
171 config IA64_HP_ZX1_SWIOTLB
172 bool "HP-zx1/sx1000 with software I/O TLB"
175 Build a kernel that runs on HP zx1 and sx1000 systems even when they
176 have broken PCI devices which cannot DMA to full 32 bits. Apart
177 from support for the HP I/O MMU, this includes support for the software
178 I/O TLB, which allows supporting the broken devices at the expense of
179 wasting some kernel memory (about 2MB by default).
186 Selecting this option will optimize the kernel for use on sn2 based
187 systems, but the resulting kernel binary will not run on other
188 types of ia64 systems. If you have an SGI Altix system, it's safe
189 to select this option. If in doubt, select ia64 generic support
198 Selecting this option will optimize the kernel for use on UV based
199 systems, but the resulting kernel binary will not run on other
200 types of ia64 systems. If you have an SGI UV system, it's safe
201 to select this option. If in doubt, select ia64 generic support
212 prompt "Processor type"
218 Select your IA-64 processor type. The default is Itanium.
219 This choice is safe for all IA-64 systems, but may not perform
220 optimally on systems with, say, Itanium 2 or newer processors.
225 Select this to configure for an Itanium 2 (McKinley) processor.
230 prompt "Kernel page size"
231 default IA64_PAGE_SIZE_16KB
233 config IA64_PAGE_SIZE_4KB
236 This lets you select the page size of the kernel. For best IA-64
237 performance, a page size of 8KB or 16KB is recommended. For best
238 IA-32 compatibility, a page size of 4KB should be selected (the vast
239 majority of IA-32 binaries work perfectly fine with a larger page
240 size). For Itanium 2 or newer systems, a page size of 64KB can also
243 4KB For best IA-32 compatibility
244 8KB For best IA-64 performance
245 16KB For best IA-64 performance
246 64KB Requires Itanium 2 or newer processor.
248 If you don't know what to do, choose 16KB.
250 config IA64_PAGE_SIZE_8KB
253 config IA64_PAGE_SIZE_16KB
256 config IA64_PAGE_SIZE_64KB
268 source kernel/Kconfig.hz
276 # align cache-sensitive data to 128 bytes
277 config IA64_L1_CACHE_SHIFT
279 default "7" if MCKINLEY
280 default "6" if ITANIUM
283 bool "Cyclone (EXA) Time Source support"
285 Say Y here to enable support for IBM EXA Cyclone time source.
286 If you're unsure, answer N.
290 depends on !IA64_HP_SIM
293 config FORCE_MAX_ZONEORDER
294 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
295 range 11 17 if !HUGETLB_PAGE
296 default "17" if HUGETLB_PAGE
300 bool "Symmetric multi-processing support"
302 This enables support for systems with more than one CPU. If you have
303 a system with only one CPU, say N. If you have a system with more
306 If you say N here, the kernel will run on single and multiprocessor
307 systems, but will use only one CPU of a multiprocessor system. If
308 you say Y here, the kernel will run on many, but not all,
309 single processor systems. On a single processor system, the kernel
310 will run faster if you say N here.
312 See also the SMP-HOWTO available at
313 <http://www.tldp.org/docs.html#howto>.
315 If you don't know what to do here, say N.
318 int "Maximum number of CPUs (2-4096)"
323 You should set this to the number of CPUs in your system, but
324 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
325 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
326 than 64 will cause the use of a CPU mask array, causing a small
330 bool "Support for hot-pluggable CPUs"
334 Say Y here to experiment with turning CPUs off and on. CPUs
335 can be controlled through /sys/devices/system/cpu/cpu#.
336 Say N if you want to disable CPU hotplug.
338 config ARCH_ENABLE_MEMORY_HOTPLUG
341 config ARCH_ENABLE_MEMORY_HOTREMOVE
345 bool "SMT scheduler support"
348 Improves the CPU scheduler's decision making when dealing with
349 Intel IA64 chips with MultiThreading at a cost of slightly increased
350 overhead in some places. If unsure say N here.
352 config PERMIT_BSP_REMOVE
353 bool "Support removal of Bootstrap Processor"
354 depends on HOTPLUG_CPU
357 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
360 config FORCE_CPEI_RETARGET
361 bool "Force assumption that CPEI can be re-targeted"
362 depends on PERMIT_BSP_REMOVE
365 Say Y if you need to force the assumption that CPEI can be re-targeted to
366 any cpu in the system. This hint is available via ACPI 3.0 specifications.
367 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
368 This option it useful to enable this feature on older BIOS's as well.
369 You can also enable this by using boot command line option force_cpei=1.
371 source "kernel/Kconfig.preempt"
375 config ARCH_SELECT_MEMORY_MODEL
378 config ARCH_DISCONTIGMEM_ENABLE
381 Say Y to support efficient handling of discontiguous physical memory,
382 for architectures which are either NUMA (Non-Uniform Memory Access)
383 or have huge holes in the physical address space for other reasons.
384 See <file:Documentation/vm/numa.rst> for more.
386 config ARCH_FLATMEM_ENABLE
389 config ARCH_SPARSEMEM_ENABLE
391 depends on ARCH_DISCONTIGMEM_ENABLE
392 select SPARSEMEM_VMEMMAP_ENABLE
394 config ARCH_DISCONTIGMEM_DEFAULT
395 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
396 depends on ARCH_DISCONTIGMEM_ENABLE
400 depends on !IA64_HP_SIM && !FLATMEM
401 default y if IA64_SGI_SN2
402 select ACPI_NUMA if ACPI
404 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
405 Access). This option is for configuring high-end multiprocessor
406 server systems. If in doubt, say N.
409 int "Max num nodes shift(3-10)"
412 depends on NEED_MULTIPLE_NODES
414 This option specifies the maximum number of nodes in your SSI system.
415 MAX_NUMNODES will be 2^(This value).
416 If in doubt, use the default.
418 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
419 # VIRTUAL_MEM_MAP has been retained for historical reasons.
420 config VIRTUAL_MEM_MAP
421 bool "Virtual mem map"
422 depends on !SPARSEMEM
423 default y if !IA64_HP_SIM
425 Say Y to compile the kernel with support for a virtual mem map.
426 This code also only takes effect if a memory hole of greater than
427 1 Gb is found during boot. You must turn this option on if you
428 require the DISCONTIGMEM option for your machine. If you are
433 default y if VIRTUAL_MEM_MAP
435 config HAVE_ARCH_EARLY_PFN_TO_NID
436 def_bool NUMA && SPARSEMEM
438 config HAVE_ARCH_NODEDATA_EXTENSION
442 config USE_PERCPU_NUMA_NODE_ID
446 config HAVE_MEMORYLESS_NODES
449 config ARCH_PROC_KCORE_TEXT
451 depends on PROC_KCORE
453 config IA64_MCA_RECOVERY
454 tristate "MCA recovery from errors other than TLB."
457 bool "Performance monitor support"
460 Selects whether support for the IA-64 performance monitor hardware
461 is included in the kernel. This makes some kernel data-structures a
462 little bigger and slows down execution a bit, but it is generally
463 a good idea to turn this on. If you're unsure, say Y.
466 tristate "/proc/pal support"
468 If you say Y here, you are able to get PAL (Processor Abstraction
469 Layer) information in /proc/pal. This contains useful information
470 about the processors in your systems, such as cache and TLB sizes
471 and the PAL firmware version in use.
473 To use this option, you have to ensure that the "/proc file system
474 support" (CONFIG_PROC_FS) is enabled, too.
476 config IA64_MC_ERR_INJECT
477 tristate "MC error injection support"
479 Adds support for MC error injection. If enabled, the kernel
480 will provide a sysfs interface for user applications to
481 call MC error injection PAL procedures to inject various errors.
482 This is a useful tool for MCA testing.
484 If you're unsure, do not select this option.
487 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
490 bool "ESI (Extensible SAL Interface) support"
492 If you say Y here, support is built into the kernel to
493 make ESI calls. ESI calls are used to support vendor-specific
494 firmware extensions, such as the ability to inject memory-errors
495 for test-purposes. If you're unsure, say N.
497 config IA64_HP_AML_NFW
498 bool "Support ACPI AML calls to native firmware"
500 This driver installs a global ACPI Operation Region handler for
501 region 0xA1. AML methods can use this OpRegion to call arbitrary
502 native firmware functions. The driver installs the OpRegion
503 handler if there is an HPQ5001 device or if the user supplies
504 the "force" module parameter, e.g., with the "aml_nfw.force"
505 kernel command line option.
507 source "drivers/sn/Kconfig"
510 bool "kexec system call"
511 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
514 kexec is a system call that implements the ability to shutdown your
515 current kernel, and to start another kernel. It is like a reboot
516 but it is independent of the system firmware. And like a reboot
517 you can start any kernel with it, not just Linux.
519 The name comes from the similarity to the exec system call.
521 It is an ongoing process to be certain the hardware in a machine
522 is properly shutdown, so do not be surprised if this code does not
523 initially work for you. As of this writing the exact hardware
524 interface is strongly in flux, so no good recommendation can be
528 bool "kernel crash dumps"
529 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
531 Generate crash dump after being started by kexec.
533 source "drivers/firmware/Kconfig"
535 source "fs/Kconfig.binfmt"
539 menu "Power management and ACPI options"
541 source "kernel/power/Kconfig"
543 source "drivers/acpi/Kconfig"
546 menu "CPU Frequency scaling"
547 source "drivers/cpufreq/Kconfig"
555 menu "Bus options (PCI, PCMCIA)"
560 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
561 here unless you are using a simulator without PCI support.
569 source "drivers/pci/Kconfig"
571 source "drivers/pcmcia/Kconfig"
579 source "drivers/Kconfig"
581 source "arch/ia64/hp/sim/Kconfig"
584 tristate "Memory special operations driver"
586 select IA64_UNCACHED_ALLOCATOR
588 If you have an ia64 and you want to enable memory special
589 operations support (formerly known as fetchop), say Y here,
594 source "arch/ia64/Kconfig.debug"
596 source "security/Kconfig"
598 source "crypto/Kconfig"