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 ARCH_SUPPORTS_ACPI
15 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
16 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
18 select PCI_DOMAINS if PCI
19 select PCI_SYSCALL if PCI
20 select HAVE_UNSTABLE_SCHED_CLOCK
21 select HAVE_EXIT_THREAD
25 select HAVE_KRETPROBES
26 select HAVE_FTRACE_MCOUNT_RECORD
27 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
28 select HAVE_FUNCTION_TRACER
30 select HAVE_ARCH_TRACEHOOK
31 select HAVE_MEMBLOCK_NODE_MAP
32 select HAVE_VIRT_CPU_ACCOUNTING
33 select ARCH_HAS_DMA_COHERENT_TO_PFN if SWIOTLB
34 select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB
36 select GENERIC_IRQ_PROBE
37 select GENERIC_PENDING_IRQ if SMP
38 select GENERIC_IRQ_SHOW
39 select GENERIC_IRQ_LEGACY
40 select ARCH_HAVE_NMI_SAFE_CMPXCHG
42 select GENERIC_SMP_IDLE_THREAD
43 select ARCH_TASK_STRUCT_ON_STACK
44 select ARCH_TASK_STRUCT_ALLOCATOR
45 select ARCH_THREAD_STACK_ALLOCATOR
46 select ARCH_CLOCKSOURCE_DATA
47 select GENERIC_TIME_VSYSCALL
48 select SYSCTL_ARCH_UNALIGN_NO_WARN
49 select HAVE_MOD_ARCH_SPECIFIC
50 select MODULES_USE_ELF_RELA
51 select ARCH_USE_CMPXCHG_LOCKREF
52 select HAVE_ARCH_AUDITSYSCALL
53 select NEED_DMA_MAP_STATE
54 select NEED_SG_DMA_LENGTH
57 The Itanium Processor Family is Intel's 64-bit successor to
58 the 32-bit X86 line. The IA-64 Linux project has a home
59 page at <http://www.linuxia64.org/> and a mailing list at
60 <linux-ia64@vger.kernel.org>.
64 select ATA_NONSTANDARD if ATA
78 config STACKTRACE_SUPPORT
81 config GENERIC_LOCKBREAK
84 config HUGETLB_PAGE_SIZE_VARIABLE
86 depends on HUGETLB_PAGE
89 config GENERIC_CALIBRATE_DELAY
93 config HAVE_SETUP_PER_CPU_AREA
99 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
106 config SCHED_OMIT_FRAME_POINTER
110 config IA64_UNCACHED_ALLOCATOR
112 select GENERIC_ALLOCATOR
114 config ARCH_USES_PG_UNCACHED
116 depends on IA64_UNCACHED_ALLOCATOR
133 This selects the system type of your hardware. A "generic" kernel
134 will run on any supported IA-64 system. However, if you configure
135 a kernel for your specific system, it will be faster and smaller.
137 generic For any supported IA-64 system
138 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
139 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
140 HP-zx1/sx1000 For HP systems
141 SGI-UV For SGI UV systems
143 If you don't know what to do, choose "generic".
152 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
153 support for the HP I/O MMU.
161 Selecting this option will optimize the kernel for use on UV based
162 systems, but the resulting kernel binary will not run on other
163 types of ia64 systems. If you have an SGI UV system, it's safe
164 to select this option. If in doubt, select ia64 generic support
170 prompt "Processor type"
176 Select your IA-64 processor type. The default is Itanium.
177 This choice is safe for all IA-64 systems, but may not perform
178 optimally on systems with, say, Itanium 2 or newer processors.
183 Select this to configure for an Itanium 2 (McKinley) processor.
188 prompt "Kernel page size"
189 default IA64_PAGE_SIZE_16KB
191 config IA64_PAGE_SIZE_4KB
194 This lets you select the page size of the kernel. For best IA-64
195 performance, a page size of 8KB or 16KB is recommended. For best
196 IA-32 compatibility, a page size of 4KB should be selected (the vast
197 majority of IA-32 binaries work perfectly fine with a larger page
198 size). For Itanium 2 or newer systems, a page size of 64KB can also
201 4KB For best IA-32 compatibility
202 8KB For best IA-64 performance
203 16KB For best IA-64 performance
204 64KB Requires Itanium 2 or newer processor.
206 If you don't know what to do, choose 16KB.
208 config IA64_PAGE_SIZE_8KB
211 config IA64_PAGE_SIZE_16KB
214 config IA64_PAGE_SIZE_64KB
220 source "kernel/Kconfig.hz"
227 # align cache-sensitive data to 128 bytes
228 config IA64_L1_CACHE_SHIFT
230 default "7" if MCKINLEY
231 default "6" if ITANIUM
234 bool "Cyclone (EXA) Time Source support"
236 Say Y here to enable support for IBM EXA Cyclone time source.
237 If you're unsure, answer N.
239 config FORCE_MAX_ZONEORDER
240 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
241 range 11 17 if !HUGETLB_PAGE
242 default "17" if HUGETLB_PAGE
246 bool "Symmetric multi-processing support"
248 This enables support for systems with more than one CPU. If you have
249 a system with only one CPU, say N. If you have a system with more
252 If you say N here, the kernel will run on single and multiprocessor
253 systems, but will use only one CPU of a multiprocessor system. If
254 you say Y here, the kernel will run on many, but not all,
255 single processor systems. On a single processor system, the kernel
256 will run faster if you say N here.
258 See also the SMP-HOWTO available at
259 <http://www.tldp.org/docs.html#howto>.
261 If you don't know what to do here, say N.
264 int "Maximum number of CPUs (2-4096)"
269 You should set this to the number of CPUs in your system, but
270 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
271 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
272 than 64 will cause the use of a CPU mask array, causing a small
276 bool "Support for hot-pluggable CPUs"
280 Say Y here to experiment with turning CPUs off and on. CPUs
281 can be controlled through /sys/devices/system/cpu/cpu#.
282 Say N if you want to disable CPU hotplug.
284 config ARCH_ENABLE_MEMORY_HOTPLUG
287 config ARCH_ENABLE_MEMORY_HOTREMOVE
291 bool "SMT scheduler support"
294 Improves the CPU scheduler's decision making when dealing with
295 Intel IA64 chips with MultiThreading at a cost of slightly increased
296 overhead in some places. If unsure say N here.
298 config PERMIT_BSP_REMOVE
299 bool "Support removal of Bootstrap Processor"
300 depends on HOTPLUG_CPU
303 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
306 config FORCE_CPEI_RETARGET
307 bool "Force assumption that CPEI can be re-targeted"
308 depends on PERMIT_BSP_REMOVE
311 Say Y if you need to force the assumption that CPEI can be re-targeted to
312 any cpu in the system. This hint is available via ACPI 3.0 specifications.
313 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
314 This option it useful to enable this feature on older BIOS's as well.
315 You can also enable this by using boot command line option force_cpei=1.
317 config ARCH_SELECT_MEMORY_MODEL
320 config ARCH_DISCONTIGMEM_ENABLE
323 Say Y to support efficient handling of discontiguous physical memory,
324 for architectures which are either NUMA (Non-Uniform Memory Access)
325 or have huge holes in the physical address space for other reasons.
326 See <file:Documentation/vm/numa.rst> for more.
328 config ARCH_FLATMEM_ENABLE
331 config ARCH_SPARSEMEM_ENABLE
333 depends on ARCH_DISCONTIGMEM_ENABLE
334 select SPARSEMEM_VMEMMAP_ENABLE
336 config ARCH_DISCONTIGMEM_DEFAULT
337 def_bool y if (IA64_GENERIC || IA64_HP_ZX1)
338 depends on ARCH_DISCONTIGMEM_ENABLE
343 select ACPI_NUMA if ACPI
345 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
346 Access). This option is for configuring high-end multiprocessor
347 server systems. If in doubt, say N.
350 int "Max num nodes shift(3-10)"
353 depends on NEED_MULTIPLE_NODES
355 This option specifies the maximum number of nodes in your SSI system.
356 MAX_NUMNODES will be 2^(This value).
357 If in doubt, use the default.
359 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
360 # VIRTUAL_MEM_MAP has been retained for historical reasons.
361 config VIRTUAL_MEM_MAP
362 bool "Virtual mem map"
363 depends on !SPARSEMEM
366 Say Y to compile the kernel with support for a virtual mem map.
367 This code also only takes effect if a memory hole of greater than
368 1 Gb is found during boot. You must turn this option on if you
369 require the DISCONTIGMEM option for your machine. If you are
374 default y if VIRTUAL_MEM_MAP
376 config HAVE_ARCH_EARLY_PFN_TO_NID
377 def_bool NUMA && SPARSEMEM
379 config HAVE_ARCH_NODEDATA_EXTENSION
383 config USE_PERCPU_NUMA_NODE_ID
387 config HAVE_MEMORYLESS_NODES
390 config ARCH_PROC_KCORE_TEXT
392 depends on PROC_KCORE
394 config IA64_MCA_RECOVERY
395 tristate "MCA recovery from errors other than TLB."
398 bool "Performance monitor support"
401 Selects whether support for the IA-64 performance monitor hardware
402 is included in the kernel. This makes some kernel data-structures a
403 little bigger and slows down execution a bit, but it is generally
404 a good idea to turn this on. If you're unsure, say Y.
407 tristate "/proc/pal support"
409 If you say Y here, you are able to get PAL (Processor Abstraction
410 Layer) information in /proc/pal. This contains useful information
411 about the processors in your systems, such as cache and TLB sizes
412 and the PAL firmware version in use.
414 To use this option, you have to ensure that the "/proc file system
415 support" (CONFIG_PROC_FS) is enabled, too.
417 config IA64_MC_ERR_INJECT
418 tristate "MC error injection support"
420 Adds support for MC error injection. If enabled, the kernel
421 will provide a sysfs interface for user applications to
422 call MC error injection PAL procedures to inject various errors.
423 This is a useful tool for MCA testing.
425 If you're unsure, do not select this option.
428 bool "ESI (Extensible SAL Interface) support"
430 If you say Y here, support is built into the kernel to
431 make ESI calls. ESI calls are used to support vendor-specific
432 firmware extensions, such as the ability to inject memory-errors
433 for test-purposes. If you're unsure, say N.
435 config IA64_HP_AML_NFW
436 bool "Support ACPI AML calls to native firmware"
438 This driver installs a global ACPI Operation Region handler for
439 region 0xA1. AML methods can use this OpRegion to call arbitrary
440 native firmware functions. The driver installs the OpRegion
441 handler if there is an HPQ5001 device or if the user supplies
442 the "force" module parameter, e.g., with the "aml_nfw.force"
443 kernel command line option.
446 bool "kexec system call"
447 depends on !SMP || HOTPLUG_CPU
450 kexec is a system call that implements the ability to shutdown your
451 current kernel, and to start another kernel. It is like a reboot
452 but it is independent of the system firmware. And like a reboot
453 you can start any kernel with it, not just Linux.
455 The name comes from the similarity to the exec system call.
457 It is an ongoing process to be certain the hardware in a machine
458 is properly shutdown, so do not be surprised if this code does not
459 initially work for you. As of this writing the exact hardware
460 interface is strongly in flux, so no good recommendation can be
464 bool "kernel crash dumps"
465 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
467 Generate crash dump after being started by kexec.
469 source "drivers/firmware/Kconfig"
473 menu "Power management and ACPI options"
475 source "kernel/power/Kconfig"
477 source "drivers/acpi/Kconfig"
480 menu "CPU Frequency scaling"
481 source "drivers/cpufreq/Kconfig"
488 tristate "Memory special operations driver"
490 select IA64_UNCACHED_ALLOCATOR
492 If you have an ia64 and you want to enable memory special
493 operations support (formerly known as fetchop), say Y here,