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
7 menu "Processor type and features"
11 select ARCH_MIGHT_HAVE_PC_PARPORT
12 select ARCH_MIGHT_HAVE_PC_SERIO
14 select ACPI_NUMA if NUMA
15 select ARCH_SUPPORTS_ACPI
16 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
17 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
19 select PCI_DOMAINS if PCI
21 select PCI_SYSCALL if PCI
22 select HAVE_ASM_MODVERSIONS
23 select HAVE_UNSTABLE_SCHED_CLOCK
24 select HAVE_EXIT_THREAD
28 select HAVE_KRETPROBES
29 select HAVE_FTRACE_MCOUNT_RECORD
30 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
31 select HAVE_FUNCTION_TRACER
33 select HAVE_ARCH_TRACEHOOK
34 select HAVE_MEMBLOCK_NODE_MAP
35 select HAVE_VIRT_CPU_ACCOUNTING
36 select ARCH_HAS_DMA_COHERENT_TO_PFN
37 select ARCH_HAS_SYNC_DMA_FOR_CPU
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
52 select SYSCTL_ARCH_UNALIGN_NO_WARN
53 select HAVE_MOD_ARCH_SPECIFIC
54 select MODULES_USE_ELF_RELA
55 select ARCH_USE_CMPXCHG_LOCKREF
56 select HAVE_ARCH_AUDITSYSCALL
57 select NEED_DMA_MAP_STATE
58 select NEED_SG_DMA_LENGTH
59 select NUMA if !FLATMEM
62 The Itanium Processor Family is Intel's 64-bit successor to
63 the 32-bit X86 line. The IA-64 Linux project has a home
64 page at <http://www.linuxia64.org/> and a mailing list at
65 <linux-ia64@vger.kernel.org>.
69 select ATA_NONSTANDARD if ATA
83 config STACKTRACE_SUPPORT
86 config GENERIC_LOCKBREAK
89 config HUGETLB_PAGE_SIZE_VARIABLE
91 depends on HUGETLB_PAGE
94 config GENERIC_CALIBRATE_DELAY
98 config HAVE_SETUP_PER_CPU_AREA
104 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
111 config SCHED_OMIT_FRAME_POINTER
115 config IA64_UNCACHED_ALLOCATOR
117 select GENERIC_ALLOCATOR
119 config ARCH_USES_PG_UNCACHED
121 depends on IA64_UNCACHED_ALLOCATOR
128 prompt "Processor type"
134 Select your IA-64 processor type. The default is Itanium.
135 This choice is safe for all IA-64 systems, but may not perform
136 optimally on systems with, say, Itanium 2 or newer processors.
141 Select this to configure for an Itanium 2 (McKinley) processor.
146 prompt "Kernel page size"
147 default IA64_PAGE_SIZE_16KB
149 config IA64_PAGE_SIZE_4KB
152 This lets you select the page size of the kernel. For best IA-64
153 performance, a page size of 8KB or 16KB is recommended. For best
154 IA-32 compatibility, a page size of 4KB should be selected (the vast
155 majority of IA-32 binaries work perfectly fine with a larger page
156 size). For Itanium 2 or newer systems, a page size of 64KB can also
159 4KB For best IA-32 compatibility
160 8KB For best IA-64 performance
161 16KB For best IA-64 performance
162 64KB Requires Itanium 2 or newer processor.
164 If you don't know what to do, choose 16KB.
166 config IA64_PAGE_SIZE_8KB
169 config IA64_PAGE_SIZE_16KB
172 config IA64_PAGE_SIZE_64KB
178 source "kernel/Kconfig.hz"
185 # align cache-sensitive data to 128 bytes
186 config IA64_L1_CACHE_SHIFT
188 default "7" if MCKINLEY
189 default "6" if ITANIUM
192 bool "SGI-UV support"
194 Selecting this option will add specific support for running on SGI
195 UV based systems. If you have an SGI UV system or are building a
196 distro kernel, select this option.
198 config IA64_HP_SBA_IOMMU
199 bool "HP SBA IOMMU support"
202 Say Y here to add support for the SBA IOMMU found on HP zx1 and
203 sx1000 systems. If you're unsure, answer Y.
206 bool "Cyclone (EXA) Time Source support"
208 Say Y here to enable support for IBM EXA Cyclone time source.
209 If you're unsure, answer N.
211 config FORCE_MAX_ZONEORDER
212 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
213 range 11 17 if !HUGETLB_PAGE
214 default "17" if HUGETLB_PAGE
218 bool "Symmetric multi-processing support"
220 This enables support for systems with more than one CPU. If you have
221 a system with only one CPU, say N. If you have a system with more
224 If you say N here, the kernel will run on single and multiprocessor
225 systems, but will use only one CPU of a multiprocessor system. If
226 you say Y here, the kernel will run on many, but not all,
227 single processor systems. On a single processor system, the kernel
228 will run faster if you say N here.
230 See also the SMP-HOWTO available at
231 <http://www.tldp.org/docs.html#howto>.
233 If you don't know what to do here, say N.
236 int "Maximum number of CPUs (2-4096)"
241 You should set this to the number of CPUs in your system, but
242 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
243 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
244 than 64 will cause the use of a CPU mask array, causing a small
248 bool "Support for hot-pluggable CPUs"
252 Say Y here to experiment with turning CPUs off and on. CPUs
253 can be controlled through /sys/devices/system/cpu/cpu#.
254 Say N if you want to disable CPU hotplug.
256 config ARCH_ENABLE_MEMORY_HOTPLUG
259 config ARCH_ENABLE_MEMORY_HOTREMOVE
263 bool "SMT scheduler support"
266 Improves the CPU scheduler's decision making when dealing with
267 Intel IA64 chips with MultiThreading at a cost of slightly increased
268 overhead in some places. If unsure say N here.
270 config PERMIT_BSP_REMOVE
271 bool "Support removal of Bootstrap Processor"
272 depends on HOTPLUG_CPU
275 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
278 config FORCE_CPEI_RETARGET
279 bool "Force assumption that CPEI can be re-targeted"
280 depends on PERMIT_BSP_REMOVE
283 Say Y if you need to force the assumption that CPEI can be re-targeted to
284 any cpu in the system. This hint is available via ACPI 3.0 specifications.
285 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
286 This option it useful to enable this feature on older BIOS's as well.
287 You can also enable this by using boot command line option force_cpei=1.
289 config ARCH_SELECT_MEMORY_MODEL
292 config ARCH_DISCONTIGMEM_ENABLE
295 Say Y to support efficient handling of discontiguous physical memory,
296 for architectures which are either NUMA (Non-Uniform Memory Access)
297 or have huge holes in the physical address space for other reasons.
298 See <file:Documentation/vm/numa.rst> for more.
300 config ARCH_FLATMEM_ENABLE
303 config ARCH_SPARSEMEM_ENABLE
305 depends on ARCH_DISCONTIGMEM_ENABLE
306 select SPARSEMEM_VMEMMAP_ENABLE
308 config ARCH_DISCONTIGMEM_DEFAULT
310 depends on ARCH_DISCONTIGMEM_ENABLE
317 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
318 Access). This option is for configuring high-end multiprocessor
319 server systems. If in doubt, say N.
322 int "Max num nodes shift(3-10)"
325 depends on NEED_MULTIPLE_NODES
327 This option specifies the maximum number of nodes in your SSI system.
328 MAX_NUMNODES will be 2^(This value).
329 If in doubt, use the default.
331 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
332 # VIRTUAL_MEM_MAP has been retained for historical reasons.
333 config VIRTUAL_MEM_MAP
334 bool "Virtual mem map"
335 depends on !SPARSEMEM
338 Say Y to compile the kernel with support for a virtual mem map.
339 This code also only takes effect if a memory hole of greater than
340 1 Gb is found during boot. You must turn this option on if you
341 require the DISCONTIGMEM option for your machine. If you are
346 default y if VIRTUAL_MEM_MAP
348 config HAVE_ARCH_EARLY_PFN_TO_NID
349 def_bool NUMA && SPARSEMEM
351 config HAVE_ARCH_NODEDATA_EXTENSION
355 config USE_PERCPU_NUMA_NODE_ID
359 config HAVE_MEMORYLESS_NODES
362 config ARCH_PROC_KCORE_TEXT
364 depends on PROC_KCORE
366 config IA64_MCA_RECOVERY
367 tristate "MCA recovery from errors other than TLB."
370 bool "Performance monitor support"
373 Selects whether support for the IA-64 performance monitor hardware
374 is included in the kernel. This makes some kernel data-structures a
375 little bigger and slows down execution a bit, but it is generally
376 a good idea to turn this on. If you're unsure, say Y.
379 tristate "/proc/pal support"
381 If you say Y here, you are able to get PAL (Processor Abstraction
382 Layer) information in /proc/pal. This contains useful information
383 about the processors in your systems, such as cache and TLB sizes
384 and the PAL firmware version in use.
386 To use this option, you have to ensure that the "/proc file system
387 support" (CONFIG_PROC_FS) is enabled, too.
389 config IA64_MC_ERR_INJECT
390 tristate "MC error injection support"
392 Adds support for MC error injection. If enabled, the kernel
393 will provide a sysfs interface for user applications to
394 call MC error injection PAL procedures to inject various errors.
395 This is a useful tool for MCA testing.
397 If you're unsure, do not select this option.
400 bool "ESI (Extensible SAL Interface) support"
402 If you say Y here, support is built into the kernel to
403 make ESI calls. ESI calls are used to support vendor-specific
404 firmware extensions, such as the ability to inject memory-errors
405 for test-purposes. If you're unsure, say N.
407 config IA64_HP_AML_NFW
408 bool "Support ACPI AML calls to native firmware"
410 This driver installs a global ACPI Operation Region handler for
411 region 0xA1. AML methods can use this OpRegion to call arbitrary
412 native firmware functions. The driver installs the OpRegion
413 handler if there is an HPQ5001 device or if the user supplies
414 the "force" module parameter, e.g., with the "aml_nfw.force"
415 kernel command line option.
418 bool "kexec system call"
419 depends on !SMP || HOTPLUG_CPU
422 kexec is a system call that implements the ability to shutdown your
423 current kernel, and to start another kernel. It is like a reboot
424 but it is independent of the system firmware. And like a reboot
425 you can start any kernel with it, not just Linux.
427 The name comes from the similarity to the exec system call.
429 It is an ongoing process to be certain the hardware in a machine
430 is properly shutdown, so do not be surprised if this code does not
431 initially work for you. As of this writing the exact hardware
432 interface is strongly in flux, so no good recommendation can be
436 bool "kernel crash dumps"
437 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
439 Generate crash dump after being started by kexec.
441 source "drivers/firmware/Kconfig"
445 menu "Power management and ACPI options"
447 source "kernel/power/Kconfig"
449 source "drivers/acpi/Kconfig"
452 menu "CPU Frequency scaling"
453 source "drivers/cpufreq/Kconfig"
460 tristate "Memory special operations driver"
462 select IA64_UNCACHED_ALLOCATOR
464 If you have an ia64 and you want to enable memory special
465 operations support (formerly known as fetchop), say Y here,