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_UNSTABLE_SCHED_CLOCK
23 select HAVE_EXIT_THREAD
27 select HAVE_KRETPROBES
28 select HAVE_FTRACE_MCOUNT_RECORD
29 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
30 select HAVE_FUNCTION_TRACER
32 select HAVE_ARCH_TRACEHOOK
33 select HAVE_MEMBLOCK_NODE_MAP
34 select HAVE_VIRT_CPU_ACCOUNTING
35 select ARCH_HAS_DMA_COHERENT_TO_PFN
36 select ARCH_HAS_SYNC_DMA_FOR_CPU
38 select GENERIC_IRQ_PROBE
39 select GENERIC_PENDING_IRQ if SMP
40 select GENERIC_IRQ_SHOW
41 select GENERIC_IRQ_LEGACY
42 select ARCH_HAVE_NMI_SAFE_CMPXCHG
44 select GENERIC_SMP_IDLE_THREAD
45 select ARCH_TASK_STRUCT_ON_STACK
46 select ARCH_TASK_STRUCT_ALLOCATOR
47 select ARCH_THREAD_STACK_ALLOCATOR
48 select ARCH_CLOCKSOURCE_DATA
49 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
58 select NUMA if !FLATMEM
61 The Itanium Processor Family is Intel's 64-bit successor to
62 the 32-bit X86 line. The IA-64 Linux project has a home
63 page at <http://www.linuxia64.org/> and a mailing list at
64 <linux-ia64@vger.kernel.org>.
68 select ATA_NONSTANDARD if ATA
82 config STACKTRACE_SUPPORT
85 config GENERIC_LOCKBREAK
88 config HUGETLB_PAGE_SIZE_VARIABLE
90 depends on HUGETLB_PAGE
93 config GENERIC_CALIBRATE_DELAY
97 config HAVE_SETUP_PER_CPU_AREA
103 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
110 config SCHED_OMIT_FRAME_POINTER
114 config IA64_UNCACHED_ALLOCATOR
116 select GENERIC_ALLOCATOR
118 config ARCH_USES_PG_UNCACHED
120 depends on IA64_UNCACHED_ALLOCATOR
127 prompt "Processor type"
133 Select your IA-64 processor type. The default is Itanium.
134 This choice is safe for all IA-64 systems, but may not perform
135 optimally on systems with, say, Itanium 2 or newer processors.
140 Select this to configure for an Itanium 2 (McKinley) processor.
145 prompt "Kernel page size"
146 default IA64_PAGE_SIZE_16KB
148 config IA64_PAGE_SIZE_4KB
151 This lets you select the page size of the kernel. For best IA-64
152 performance, a page size of 8KB or 16KB is recommended. For best
153 IA-32 compatibility, a page size of 4KB should be selected (the vast
154 majority of IA-32 binaries work perfectly fine with a larger page
155 size). For Itanium 2 or newer systems, a page size of 64KB can also
158 4KB For best IA-32 compatibility
159 8KB For best IA-64 performance
160 16KB For best IA-64 performance
161 64KB Requires Itanium 2 or newer processor.
163 If you don't know what to do, choose 16KB.
165 config IA64_PAGE_SIZE_8KB
168 config IA64_PAGE_SIZE_16KB
171 config IA64_PAGE_SIZE_64KB
177 source "kernel/Kconfig.hz"
184 # align cache-sensitive data to 128 bytes
185 config IA64_L1_CACHE_SHIFT
187 default "7" if MCKINLEY
188 default "6" if ITANIUM
191 bool "SGI-UV support"
193 Selecting this option will add specific support for running on SGI
194 UV based systems. If you have an SGI UV system or are building a
195 distro kernel, select this option.
197 config IA64_HP_SBA_IOMMU
198 bool "HP SBA IOMMU support"
201 Say Y here to add support for the SBA IOMMU found on HP zx1 and
202 sx1000 systems. If you're unsure, answer Y.
205 bool "Cyclone (EXA) Time Source support"
207 Say Y here to enable support for IBM EXA Cyclone time source.
208 If you're unsure, answer N.
210 config FORCE_MAX_ZONEORDER
211 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
212 range 11 17 if !HUGETLB_PAGE
213 default "17" if HUGETLB_PAGE
217 bool "Symmetric multi-processing support"
219 This enables support for systems with more than one CPU. If you have
220 a system with only one CPU, say N. If you have a system with more
223 If you say N here, the kernel will run on single and multiprocessor
224 systems, but will use only one CPU of a multiprocessor system. If
225 you say Y here, the kernel will run on many, but not all,
226 single processor systems. On a single processor system, the kernel
227 will run faster if you say N here.
229 See also the SMP-HOWTO available at
230 <http://www.tldp.org/docs.html#howto>.
232 If you don't know what to do here, say N.
235 int "Maximum number of CPUs (2-4096)"
240 You should set this to the number of CPUs in your system, but
241 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
242 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
243 than 64 will cause the use of a CPU mask array, causing a small
247 bool "Support for hot-pluggable CPUs"
251 Say Y here to experiment with turning CPUs off and on. CPUs
252 can be controlled through /sys/devices/system/cpu/cpu#.
253 Say N if you want to disable CPU hotplug.
255 config ARCH_ENABLE_MEMORY_HOTPLUG
258 config ARCH_ENABLE_MEMORY_HOTREMOVE
262 bool "SMT scheduler support"
265 Improves the CPU scheduler's decision making when dealing with
266 Intel IA64 chips with MultiThreading at a cost of slightly increased
267 overhead in some places. If unsure say N here.
269 config PERMIT_BSP_REMOVE
270 bool "Support removal of Bootstrap Processor"
271 depends on HOTPLUG_CPU
274 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
277 config FORCE_CPEI_RETARGET
278 bool "Force assumption that CPEI can be re-targeted"
279 depends on PERMIT_BSP_REMOVE
282 Say Y if you need to force the assumption that CPEI can be re-targeted to
283 any cpu in the system. This hint is available via ACPI 3.0 specifications.
284 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
285 This option it useful to enable this feature on older BIOS's as well.
286 You can also enable this by using boot command line option force_cpei=1.
288 config ARCH_SELECT_MEMORY_MODEL
291 config ARCH_DISCONTIGMEM_ENABLE
294 Say Y to support efficient handling of discontiguous physical memory,
295 for architectures which are either NUMA (Non-Uniform Memory Access)
296 or have huge holes in the physical address space for other reasons.
297 See <file:Documentation/vm/numa.rst> for more.
299 config ARCH_FLATMEM_ENABLE
302 config ARCH_SPARSEMEM_ENABLE
304 depends on ARCH_DISCONTIGMEM_ENABLE
305 select SPARSEMEM_VMEMMAP_ENABLE
307 config ARCH_DISCONTIGMEM_DEFAULT
309 depends on ARCH_DISCONTIGMEM_ENABLE
316 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
317 Access). This option is for configuring high-end multiprocessor
318 server systems. If in doubt, say N.
321 int "Max num nodes shift(3-10)"
324 depends on NEED_MULTIPLE_NODES
326 This option specifies the maximum number of nodes in your SSI system.
327 MAX_NUMNODES will be 2^(This value).
328 If in doubt, use the default.
330 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
331 # VIRTUAL_MEM_MAP has been retained for historical reasons.
332 config VIRTUAL_MEM_MAP
333 bool "Virtual mem map"
334 depends on !SPARSEMEM
337 Say Y to compile the kernel with support for a virtual mem map.
338 This code also only takes effect if a memory hole of greater than
339 1 Gb is found during boot. You must turn this option on if you
340 require the DISCONTIGMEM option for your machine. If you are
345 default y if VIRTUAL_MEM_MAP
347 config HAVE_ARCH_EARLY_PFN_TO_NID
348 def_bool NUMA && SPARSEMEM
350 config HAVE_ARCH_NODEDATA_EXTENSION
354 config USE_PERCPU_NUMA_NODE_ID
358 config HAVE_MEMORYLESS_NODES
361 config ARCH_PROC_KCORE_TEXT
363 depends on PROC_KCORE
365 config IA64_MCA_RECOVERY
366 tristate "MCA recovery from errors other than TLB."
369 bool "Performance monitor support"
372 Selects whether support for the IA-64 performance monitor hardware
373 is included in the kernel. This makes some kernel data-structures a
374 little bigger and slows down execution a bit, but it is generally
375 a good idea to turn this on. If you're unsure, say Y.
378 tristate "/proc/pal support"
380 If you say Y here, you are able to get PAL (Processor Abstraction
381 Layer) information in /proc/pal. This contains useful information
382 about the processors in your systems, such as cache and TLB sizes
383 and the PAL firmware version in use.
385 To use this option, you have to ensure that the "/proc file system
386 support" (CONFIG_PROC_FS) is enabled, too.
388 config IA64_MC_ERR_INJECT
389 tristate "MC error injection support"
391 Adds support for MC error injection. If enabled, the kernel
392 will provide a sysfs interface for user applications to
393 call MC error injection PAL procedures to inject various errors.
394 This is a useful tool for MCA testing.
396 If you're unsure, do not select this option.
399 bool "ESI (Extensible SAL Interface) support"
401 If you say Y here, support is built into the kernel to
402 make ESI calls. ESI calls are used to support vendor-specific
403 firmware extensions, such as the ability to inject memory-errors
404 for test-purposes. If you're unsure, say N.
406 config IA64_HP_AML_NFW
407 bool "Support ACPI AML calls to native firmware"
409 This driver installs a global ACPI Operation Region handler for
410 region 0xA1. AML methods can use this OpRegion to call arbitrary
411 native firmware functions. The driver installs the OpRegion
412 handler if there is an HPQ5001 device or if the user supplies
413 the "force" module parameter, e.g., with the "aml_nfw.force"
414 kernel command line option.
417 bool "kexec system call"
418 depends on !SMP || HOTPLUG_CPU
421 kexec is a system call that implements the ability to shutdown your
422 current kernel, and to start another kernel. It is like a reboot
423 but it is independent of the system firmware. And like a reboot
424 you can start any kernel with it, not just Linux.
426 The name comes from the similarity to the exec system call.
428 It is an ongoing process to be certain the hardware in a machine
429 is properly shutdown, so do not be surprised if this code does not
430 initially work for you. As of this writing the exact hardware
431 interface is strongly in flux, so no good recommendation can be
435 bool "kernel crash dumps"
436 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
438 Generate crash dump after being started by kexec.
440 source "drivers/firmware/Kconfig"
444 menu "Power management and ACPI options"
446 source "kernel/power/Kconfig"
448 source "drivers/acpi/Kconfig"
451 menu "CPU Frequency scaling"
452 source "drivers/cpufreq/Kconfig"
459 tristate "Memory special operations driver"
461 select IA64_UNCACHED_ALLOCATOR
463 If you have an ia64 and you want to enable memory special
464 operations support (formerly known as fetchop), say Y here,