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_HAS_DMA_MARK_CLEAN
12 select ARCH_MIGHT_HAVE_PC_PARPORT
13 select ARCH_MIGHT_HAVE_PC_SERIO
15 select ACPI_NUMA if NUMA
16 select ARCH_SUPPORTS_ACPI
17 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
18 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
20 select PCI_DOMAINS if PCI
22 select PCI_SYSCALL if PCI
23 select HAVE_ASM_MODVERSIONS
24 select HAVE_UNSTABLE_SCHED_CLOCK
25 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_VIRT_CPU_ACCOUNTING
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 LEGACY_TIMER_TICK
50 select SYSCTL_ARCH_UNALIGN_NO_WARN
51 select HAVE_MOD_ARCH_SPECIFIC
52 select MODULES_USE_ELF_RELA
53 select ARCH_USE_CMPXCHG_LOCKREF
54 select HAVE_ARCH_AUDITSYSCALL
55 select NEED_DMA_MAP_STATE
56 select NEED_SG_DMA_LENGTH
57 select NUMA if !FLATMEM
58 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
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
79 config STACKTRACE_SUPPORT
82 config GENERIC_LOCKBREAK
85 config HUGETLB_PAGE_SIZE_VARIABLE
87 depends on HUGETLB_PAGE
90 config GENERIC_CALIBRATE_DELAY
94 config HAVE_SETUP_PER_CPU_AREA
100 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
107 config SCHED_OMIT_FRAME_POINTER
111 config IA64_UNCACHED_ALLOCATOR
113 select GENERIC_ALLOCATOR
115 config ARCH_USES_PG_UNCACHED
117 depends on IA64_UNCACHED_ALLOCATOR
124 prompt "Processor type"
130 Select your IA-64 processor type. The default is Itanium.
131 This choice is safe for all IA-64 systems, but may not perform
132 optimally on systems with, say, Itanium 2 or newer processors.
137 Select this to configure for an Itanium 2 (McKinley) processor.
142 prompt "Kernel page size"
143 default IA64_PAGE_SIZE_16KB
145 config IA64_PAGE_SIZE_4KB
148 This lets you select the page size of the kernel. For best IA-64
149 performance, a page size of 8KB or 16KB is recommended. For best
150 IA-32 compatibility, a page size of 4KB should be selected (the vast
151 majority of IA-32 binaries work perfectly fine with a larger page
152 size). For Itanium 2 or newer systems, a page size of 64KB can also
155 4KB For best IA-32 compatibility
156 8KB For best IA-64 performance
157 16KB For best IA-64 performance
158 64KB Requires Itanium 2 or newer processor.
160 If you don't know what to do, choose 16KB.
162 config IA64_PAGE_SIZE_8KB
165 config IA64_PAGE_SIZE_16KB
168 config IA64_PAGE_SIZE_64KB
174 source "kernel/Kconfig.hz"
181 # align cache-sensitive data to 128 bytes
182 config IA64_L1_CACHE_SHIFT
184 default "7" if MCKINLEY
185 default "6" if ITANIUM
188 bool "SGI-UV support"
190 Selecting this option will add specific support for running on SGI
191 UV based systems. If you have an SGI UV system or are building a
192 distro kernel, select this option.
194 config IA64_HP_SBA_IOMMU
195 bool "HP SBA IOMMU support"
199 Say Y here to add support for the SBA IOMMU found on HP zx1 and
200 sx1000 systems. If you're unsure, answer Y.
203 bool "Cyclone (EXA) Time Source support"
205 Say Y here to enable support for IBM EXA Cyclone time source.
206 If you're unsure, answer N.
208 config FORCE_MAX_ZONEORDER
209 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
210 range 11 17 if !HUGETLB_PAGE
211 default "17" if HUGETLB_PAGE
215 bool "Symmetric multi-processing support"
217 This enables support for systems with more than one CPU. If you have
218 a system with only one CPU, say N. If you have a system with more
221 If you say N here, the kernel will run on single and multiprocessor
222 systems, but will use only one CPU of a multiprocessor system. If
223 you say Y here, the kernel will run on many, but not all,
224 single processor systems. On a single processor system, the kernel
225 will run faster if you say N here.
227 See also the SMP-HOWTO available at
228 <http://www.tldp.org/docs.html#howto>.
230 If you don't know what to do here, say N.
233 int "Maximum number of CPUs (2-4096)"
238 You should set this to the number of CPUs in your system, but
239 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
240 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
241 than 64 will cause the use of a CPU mask array, causing a small
245 bool "Support for hot-pluggable CPUs"
249 Say Y here to experiment with turning CPUs off and on. CPUs
250 can be controlled through /sys/devices/system/cpu/cpu#.
251 Say N if you want to disable CPU hotplug.
253 config ARCH_ENABLE_MEMORY_HOTPLUG
256 config ARCH_ENABLE_MEMORY_HOTREMOVE
260 bool "SMT scheduler support"
263 Improves the CPU scheduler's decision making when dealing with
264 Intel IA64 chips with MultiThreading at a cost of slightly increased
265 overhead in some places. If unsure say N here.
267 config PERMIT_BSP_REMOVE
268 bool "Support removal of Bootstrap Processor"
269 depends on HOTPLUG_CPU
272 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
275 config FORCE_CPEI_RETARGET
276 bool "Force assumption that CPEI can be re-targeted"
277 depends on PERMIT_BSP_REMOVE
280 Say Y if you need to force the assumption that CPEI can be re-targeted to
281 any cpu in the system. This hint is available via ACPI 3.0 specifications.
282 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
283 This option it useful to enable this feature on older BIOS's as well.
284 You can also enable this by using boot command line option force_cpei=1.
286 config ARCH_SELECT_MEMORY_MODEL
289 config ARCH_DISCONTIGMEM_ENABLE
293 Say Y to support efficient handling of discontiguous physical memory,
294 for architectures which are either NUMA (Non-Uniform Memory Access)
295 or have huge holes in the physical address space for other reasons.
296 See <file:Documentation/vm/numa.rst> for more.
298 config ARCH_FLATMEM_ENABLE
301 config ARCH_SPARSEMEM_ENABLE
303 select SPARSEMEM_VMEMMAP_ENABLE
305 config ARCH_SPARSEMEM_DEFAULT
307 depends on ARCH_SPARSEMEM_ENABLE
314 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
315 Access). This option is for configuring high-end multiprocessor
316 server systems. If in doubt, say N.
319 int "Max num nodes shift(3-10)"
322 depends on NEED_MULTIPLE_NODES
324 This option specifies the maximum number of nodes in your SSI system.
325 MAX_NUMNODES will be 2^(This value).
326 If in doubt, use the default.
328 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
329 # VIRTUAL_MEM_MAP has been retained for historical reasons.
330 config VIRTUAL_MEM_MAP
331 bool "Virtual mem map"
332 depends on !SPARSEMEM && !FLATMEM
335 Say Y to compile the kernel with support for a virtual mem map.
336 This code also only takes effect if a memory hole of greater than
337 1 Gb is found during boot. You must turn this option on if you
338 require the DISCONTIGMEM option for your machine. If you are
343 default y if VIRTUAL_MEM_MAP
345 config HAVE_ARCH_NODEDATA_EXTENSION
349 config USE_PERCPU_NUMA_NODE_ID
353 config HAVE_MEMORYLESS_NODES
356 config ARCH_PROC_KCORE_TEXT
358 depends on PROC_KCORE
360 config IA64_MCA_RECOVERY
361 tristate "MCA recovery from errors other than TLB."
364 tristate "/proc/pal support"
366 If you say Y here, you are able to get PAL (Processor Abstraction
367 Layer) information in /proc/pal. This contains useful information
368 about the processors in your systems, such as cache and TLB sizes
369 and the PAL firmware version in use.
371 To use this option, you have to ensure that the "/proc file system
372 support" (CONFIG_PROC_FS) is enabled, too.
374 config IA64_MC_ERR_INJECT
375 tristate "MC error injection support"
377 Adds support for MC error injection. If enabled, the kernel
378 will provide a sysfs interface for user applications to
379 call MC error injection PAL procedures to inject various errors.
380 This is a useful tool for MCA testing.
382 If you're unsure, do not select this option.
385 bool "ESI (Extensible SAL Interface) support"
387 If you say Y here, support is built into the kernel to
388 make ESI calls. ESI calls are used to support vendor-specific
389 firmware extensions, such as the ability to inject memory-errors
390 for test-purposes. If you're unsure, say N.
392 config IA64_HP_AML_NFW
393 bool "Support ACPI AML calls to native firmware"
395 This driver installs a global ACPI Operation Region handler for
396 region 0xA1. AML methods can use this OpRegion to call arbitrary
397 native firmware functions. The driver installs the OpRegion
398 handler if there is an HPQ5001 device or if the user supplies
399 the "force" module parameter, e.g., with the "aml_nfw.force"
400 kernel command line option.
403 bool "kexec system call"
404 depends on !SMP || HOTPLUG_CPU
407 kexec is a system call that implements the ability to shutdown your
408 current kernel, and to start another kernel. It is like a reboot
409 but it is independent of the system firmware. And like a reboot
410 you can start any kernel with it, not just Linux.
412 The name comes from the similarity to the exec system call.
414 It is an ongoing process to be certain the hardware in a machine
415 is properly shutdown, so do not be surprised if this code does not
416 initially work for you. As of this writing the exact hardware
417 interface is strongly in flux, so no good recommendation can be
421 bool "kernel crash dumps"
422 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
424 Generate crash dump after being started by kexec.
426 source "drivers/firmware/Kconfig"
430 menu "Power management and ACPI options"
432 source "kernel/power/Kconfig"
434 source "drivers/acpi/Kconfig"
437 menu "CPU Frequency scaling"
438 source "drivers/cpufreq/Kconfig"
445 tristate "Memory special operations driver"
447 select IA64_UNCACHED_ALLOCATOR
449 If you have an ia64 and you want to enable memory special
450 operations support (formerly known as fetchop), say Y here,