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_BINFMT_ELF_EXTRA_PHDRS
12 select ARCH_HAS_CPU_FINALIZE_INIT
13 select ARCH_HAS_DMA_MARK_CLEAN
14 select ARCH_HAS_STRNCPY_FROM_USER
15 select ARCH_HAS_STRNLEN_USER
16 select ARCH_MIGHT_HAVE_PC_PARPORT
17 select ARCH_MIGHT_HAVE_PC_SERIO
19 select ACPI_NUMA if NUMA
20 select ARCH_ENABLE_MEMORY_HOTPLUG
21 select ARCH_ENABLE_MEMORY_HOTREMOVE
22 select ARCH_SUPPORTS_ACPI
23 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
24 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
26 select PCI_DOMAINS if PCI
28 select PCI_SYSCALL if PCI
30 select HAVE_ASM_MODVERSIONS
31 select HAVE_UNSTABLE_SCHED_CLOCK
32 select HAVE_EXIT_THREAD
34 select HAVE_KRETPROBES
35 select HAVE_FTRACE_MCOUNT_RECORD
36 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
37 select HAVE_FUNCTION_TRACER
38 select HAVE_SETUP_PER_CPU_AREA
40 select HAVE_ARCH_TRACEHOOK
41 select HAVE_FUNCTION_DESCRIPTORS
42 select HAVE_VIRT_CPU_ACCOUNTING
43 select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
44 select GENERIC_IRQ_PROBE
45 select GENERIC_PENDING_IRQ if SMP
46 select GENERIC_IRQ_SHOW
47 select GENERIC_IRQ_LEGACY
48 select ARCH_HAVE_NMI_SAFE_CMPXCHG
50 select GENERIC_SMP_IDLE_THREAD
51 select ARCH_TASK_STRUCT_ON_STACK
52 select ARCH_TASK_STRUCT_ALLOCATOR
53 select ARCH_THREAD_STACK_ALLOCATOR
54 select ARCH_CLOCKSOURCE_DATA
55 select GENERIC_TIME_VSYSCALL
56 select LEGACY_TIMER_TICK
58 select SYSCTL_ARCH_UNALIGN_NO_WARN
59 select HAVE_MOD_ARCH_SPECIFIC
60 select MODULES_USE_ELF_RELA
61 select ARCH_USE_CMPXCHG_LOCKREF
62 select HAVE_ARCH_AUDITSYSCALL
63 select NEED_DMA_MAP_STATE
64 select NEED_SG_DMA_LENGTH
65 select NUMA if !FLATMEM
66 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
68 select FUNCTION_ALIGNMENT_32B
71 The Itanium Processor Family is Intel's 64-bit successor to
72 the 32-bit X86 line. The IA-64 Linux project has a home
73 page at <http://www.linuxia64.org/> and a mailing list at
74 <linux-ia64@vger.kernel.org>.
78 select ATA_NONSTANDARD if ATA
85 config STACKTRACE_SUPPORT
88 config GENERIC_LOCKBREAK
91 config GENERIC_CALIBRATE_DELAY
98 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
105 config SCHED_OMIT_FRAME_POINTER
109 config IA64_UNCACHED_ALLOCATOR
111 select GENERIC_ALLOCATOR
113 config ARCH_USES_PG_UNCACHED
115 depends on IA64_UNCACHED_ALLOCATOR
122 prompt "Processor type"
128 Select your IA-64 processor type. The default is Itanium.
129 This choice is safe for all IA-64 systems, but may not perform
130 optimally on systems with, say, Itanium 2 or newer processors.
135 Select this to configure for an Itanium 2 (McKinley) processor.
140 prompt "Kernel page size"
141 default IA64_PAGE_SIZE_16KB
143 config IA64_PAGE_SIZE_4KB
146 This lets you select the page size of the kernel. For best IA-64
147 performance, a page size of 8KB or 16KB is recommended. For best
148 IA-32 compatibility, a page size of 4KB should be selected (the vast
149 majority of IA-32 binaries work perfectly fine with a larger page
150 size). For Itanium 2 or newer systems, a page size of 64KB can also
153 4KB For best IA-32 compatibility
154 8KB For best IA-64 performance
155 16KB For best IA-64 performance
156 64KB Requires Itanium 2 or newer processor.
158 If you don't know what to do, choose 16KB.
160 config IA64_PAGE_SIZE_8KB
163 config IA64_PAGE_SIZE_16KB
166 config IA64_PAGE_SIZE_64KB
172 source "kernel/Kconfig.hz"
179 # align cache-sensitive data to 128 bytes
180 config IA64_L1_CACHE_SHIFT
182 default "7" if MCKINLEY
183 default "6" if ITANIUM
186 bool "SGI-UV support"
188 Selecting this option will add specific support for running on SGI
189 UV based systems. If you have an SGI UV system or are building a
190 distro kernel, select this option.
192 config IA64_HP_SBA_IOMMU
193 bool "HP SBA IOMMU support"
197 Say Y here to add support for the SBA IOMMU found on HP zx1 and
198 sx1000 systems. If you're unsure, answer Y.
201 bool "Cyclone (EXA) Time Source support"
203 Say Y here to enable support for IBM EXA Cyclone time source.
204 If you're unsure, answer N.
206 config ARCH_FORCE_MAX_ORDER
208 default "16" if HUGETLB_PAGE
212 bool "Symmetric multi-processing support"
214 This enables support for systems with more than one CPU. If you have
215 a system with only one CPU, say N. If you have a system with more
218 If you say N here, the kernel will run on single and multiprocessor
219 systems, but will use only one CPU of a multiprocessor system. If
220 you say Y here, the kernel will run on many, but not all,
221 single processor systems. On a single processor system, the kernel
222 will run faster if you say N here.
224 See also the SMP-HOWTO available at
225 <http://www.tldp.org/docs.html#howto>.
227 If you don't know what to do here, say N.
230 int "Maximum number of CPUs (2-4096)"
235 You should set this to the number of CPUs in your system, but
236 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
237 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
238 than 64 will cause the use of a CPU mask array, causing a small
242 bool "Support for hot-pluggable CPUs"
246 Say Y here to experiment with turning CPUs off and on. CPUs
247 can be controlled through /sys/devices/system/cpu/cpu#.
248 Say N if you want to disable CPU hotplug.
251 bool "SMT scheduler support"
254 Improves the CPU scheduler's decision making when dealing with
255 Intel IA64 chips with MultiThreading at a cost of slightly increased
256 overhead in some places. If unsure say N here.
258 config PERMIT_BSP_REMOVE
259 bool "Support removal of Bootstrap Processor"
260 depends on HOTPLUG_CPU
263 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
266 config FORCE_CPEI_RETARGET
267 bool "Force assumption that CPEI can be re-targeted"
268 depends on PERMIT_BSP_REMOVE
271 Say Y if you need to force the assumption that CPEI can be re-targeted to
272 any cpu in the system. This hint is available via ACPI 3.0 specifications.
273 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
274 This option it useful to enable this feature on older BIOS's as well.
275 You can also enable this by using boot command line option force_cpei=1.
277 config ARCH_SELECT_MEMORY_MODEL
280 config ARCH_FLATMEM_ENABLE
283 config ARCH_SPARSEMEM_ENABLE
285 select SPARSEMEM_VMEMMAP_ENABLE
287 config ARCH_SPARSEMEM_DEFAULT
289 depends on ARCH_SPARSEMEM_ENABLE
295 select USE_PERCPU_NUMA_NODE_ID
297 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
298 Access). This option is for configuring high-end multiprocessor
299 server systems. If in doubt, say N.
302 int "Max num nodes shift(3-10)"
307 This option specifies the maximum number of nodes in your SSI system.
308 MAX_NUMNODES will be 2^(This value).
309 If in doubt, use the default.
311 config HAVE_ARCH_NODEDATA_EXTENSION
315 config HAVE_MEMORYLESS_NODES
318 config ARCH_PROC_KCORE_TEXT
320 depends on PROC_KCORE
322 config IA64_MCA_RECOVERY
323 bool "MCA recovery from errors other than TLB."
326 tristate "/proc/pal support"
328 If you say Y here, you are able to get PAL (Processor Abstraction
329 Layer) information in /proc/pal. This contains useful information
330 about the processors in your systems, such as cache and TLB sizes
331 and the PAL firmware version in use.
333 To use this option, you have to ensure that the "/proc file system
334 support" (CONFIG_PROC_FS) is enabled, too.
336 config IA64_MC_ERR_INJECT
337 tristate "MC error injection support"
339 Adds support for MC error injection. If enabled, the kernel
340 will provide a sysfs interface for user applications to
341 call MC error injection PAL procedures to inject various errors.
342 This is a useful tool for MCA testing.
344 If you're unsure, do not select this option.
347 bool "ESI (Extensible SAL Interface) support"
349 If you say Y here, support is built into the kernel to
350 make ESI calls. ESI calls are used to support vendor-specific
351 firmware extensions, such as the ability to inject memory-errors
352 for test-purposes. If you're unsure, say N.
354 config IA64_HP_AML_NFW
355 bool "Support ACPI AML calls to native firmware"
357 This driver installs a global ACPI Operation Region handler for
358 region 0xA1. AML methods can use this OpRegion to call arbitrary
359 native firmware functions. The driver installs the OpRegion
360 handler if there is an HPQ5001 device or if the user supplies
361 the "force" module parameter, e.g., with the "aml_nfw.force"
362 kernel command line option.
365 bool "kexec system call"
366 depends on !SMP || HOTPLUG_CPU
369 kexec is a system call that implements the ability to shutdown your
370 current kernel, and to start another kernel. It is like a reboot
371 but it is independent of the system firmware. And like a reboot
372 you can start any kernel with it, not just Linux.
374 The name comes from the similarity to the exec system call.
376 It is an ongoing process to be certain the hardware in a machine
377 is properly shutdown, so do not be surprised if this code does not
378 initially work for you. As of this writing the exact hardware
379 interface is strongly in flux, so no good recommendation can be
383 bool "kernel crash dumps"
384 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
386 Generate crash dump after being started by kexec.
390 menu "Power management and ACPI options"
392 source "kernel/power/Kconfig"
394 source "drivers/acpi/Kconfig"
397 menu "CPU Frequency scaling"
398 source "drivers/cpufreq/Kconfig"
405 tristate "Memory special operations driver"
407 select IA64_UNCACHED_ALLOCATOR
409 If you have an ia64 and you want to enable memory special
410 operations support (formerly known as fetchop), say Y here,