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_CPU_FINALIZE_INIT
12 select ARCH_HAS_DMA_MARK_CLEAN
13 select ARCH_HAS_STRNCPY_FROM_USER
14 select ARCH_HAS_STRNLEN_USER
15 select ARCH_MIGHT_HAVE_PC_PARPORT
16 select ARCH_MIGHT_HAVE_PC_SERIO
18 select ACPI_NUMA if NUMA
19 select ARCH_ENABLE_MEMORY_HOTPLUG
20 select ARCH_ENABLE_MEMORY_HOTREMOVE
21 select ARCH_SUPPORTS_ACPI
22 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
23 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
25 select PCI_DOMAINS if PCI
27 select PCI_SYSCALL if PCI
28 select HAVE_ASM_MODVERSIONS
29 select HAVE_UNSTABLE_SCHED_CLOCK
30 select HAVE_EXIT_THREAD
32 select HAVE_KRETPROBES
33 select HAVE_FTRACE_MCOUNT_RECORD
34 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
35 select HAVE_FUNCTION_TRACER
37 select HAVE_ARCH_TRACEHOOK
38 select HAVE_VIRT_CPU_ACCOUNTING
39 select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
41 select GENERIC_IRQ_PROBE
42 select GENERIC_PENDING_IRQ if SMP
43 select GENERIC_IRQ_SHOW
44 select GENERIC_IRQ_LEGACY
45 select ARCH_HAVE_NMI_SAFE_CMPXCHG
47 select GENERIC_SMP_IDLE_THREAD
48 select ARCH_TASK_STRUCT_ON_STACK
49 select ARCH_TASK_STRUCT_ALLOCATOR
50 select ARCH_THREAD_STACK_ALLOCATOR
51 select ARCH_CLOCKSOURCE_DATA
52 select GENERIC_TIME_VSYSCALL
53 select LEGACY_TIMER_TICK
55 select SYSCTL_ARCH_UNALIGN_NO_WARN
56 select HAVE_MOD_ARCH_SPECIFIC
57 select MODULES_USE_ELF_RELA
58 select ARCH_USE_CMPXCHG_LOCKREF
59 select HAVE_ARCH_AUDITSYSCALL
60 select NEED_DMA_MAP_STATE
61 select NEED_SG_DMA_LENGTH
62 select NUMA if !FLATMEM
63 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
68 The Itanium Processor Family is Intel's 64-bit successor to
69 the 32-bit X86 line. The IA-64 Linux project has a home
70 page at <http://www.linuxia64.org/> and a mailing list at
71 <linux-ia64@vger.kernel.org>.
75 select ATA_NONSTANDARD if ATA
82 config STACKTRACE_SUPPORT
85 config GENERIC_LOCKBREAK
88 config GENERIC_CALIBRATE_DELAY
92 config HAVE_SETUP_PER_CPU_AREA
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 FORCE_MAX_ZONEORDER
207 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
208 range 11 17 if !HUGETLB_PAGE
209 default "17" if HUGETLB_PAGE
213 bool "Symmetric multi-processing support"
215 This enables support for systems with more than one CPU. If you have
216 a system with only one CPU, say N. If you have a system with more
219 If you say N here, the kernel will run on single and multiprocessor
220 systems, but will use only one CPU of a multiprocessor system. If
221 you say Y here, the kernel will run on many, but not all,
222 single processor systems. On a single processor system, the kernel
223 will run faster if you say N here.
225 See also the SMP-HOWTO available at
226 <http://www.tldp.org/docs.html#howto>.
228 If you don't know what to do here, say N.
231 int "Maximum number of CPUs (2-4096)"
236 You should set this to the number of CPUs in your system, but
237 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
238 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
239 than 64 will cause the use of a CPU mask array, causing a small
243 bool "Support for hot-pluggable CPUs"
247 Say Y here to experiment with turning CPUs off and on. CPUs
248 can be controlled through /sys/devices/system/cpu/cpu#.
249 Say N if you want to disable CPU hotplug.
252 bool "SMT scheduler support"
255 Improves the CPU scheduler's decision making when dealing with
256 Intel IA64 chips with MultiThreading at a cost of slightly increased
257 overhead in some places. If unsure say N here.
259 config PERMIT_BSP_REMOVE
260 bool "Support removal of Bootstrap Processor"
261 depends on HOTPLUG_CPU
264 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
267 config FORCE_CPEI_RETARGET
268 bool "Force assumption that CPEI can be re-targeted"
269 depends on PERMIT_BSP_REMOVE
272 Say Y if you need to force the assumption that CPEI can be re-targeted to
273 any cpu in the system. This hint is available via ACPI 3.0 specifications.
274 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
275 This option it useful to enable this feature on older BIOS's as well.
276 You can also enable this by using boot command line option force_cpei=1.
278 config ARCH_SELECT_MEMORY_MODEL
281 config ARCH_FLATMEM_ENABLE
284 config ARCH_SPARSEMEM_ENABLE
286 select SPARSEMEM_VMEMMAP_ENABLE
288 config ARCH_SPARSEMEM_DEFAULT
290 depends on ARCH_SPARSEMEM_ENABLE
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 USE_PERCPU_NUMA_NODE_ID
319 config HAVE_MEMORYLESS_NODES
322 config ARCH_PROC_KCORE_TEXT
324 depends on PROC_KCORE
326 config IA64_MCA_RECOVERY
327 bool "MCA recovery from errors other than TLB."
330 tristate "/proc/pal support"
332 If you say Y here, you are able to get PAL (Processor Abstraction
333 Layer) information in /proc/pal. This contains useful information
334 about the processors in your systems, such as cache and TLB sizes
335 and the PAL firmware version in use.
337 To use this option, you have to ensure that the "/proc file system
338 support" (CONFIG_PROC_FS) is enabled, too.
340 config IA64_MC_ERR_INJECT
341 tristate "MC error injection support"
343 Adds support for MC error injection. If enabled, the kernel
344 will provide a sysfs interface for user applications to
345 call MC error injection PAL procedures to inject various errors.
346 This is a useful tool for MCA testing.
348 If you're unsure, do not select this option.
351 bool "ESI (Extensible SAL Interface) support"
353 If you say Y here, support is built into the kernel to
354 make ESI calls. ESI calls are used to support vendor-specific
355 firmware extensions, such as the ability to inject memory-errors
356 for test-purposes. If you're unsure, say N.
358 config IA64_HP_AML_NFW
359 bool "Support ACPI AML calls to native firmware"
361 This driver installs a global ACPI Operation Region handler for
362 region 0xA1. AML methods can use this OpRegion to call arbitrary
363 native firmware functions. The driver installs the OpRegion
364 handler if there is an HPQ5001 device or if the user supplies
365 the "force" module parameter, e.g., with the "aml_nfw.force"
366 kernel command line option.
369 bool "kexec system call"
370 depends on !SMP || HOTPLUG_CPU
373 kexec is a system call that implements the ability to shutdown your
374 current kernel, and to start another kernel. It is like a reboot
375 but it is independent of the system firmware. And like a reboot
376 you can start any kernel with it, not just Linux.
378 The name comes from the similarity to the exec system call.
380 It is an ongoing process to be certain the hardware in a machine
381 is properly shutdown, so do not be surprised if this code does not
382 initially work for you. As of this writing the exact hardware
383 interface is strongly in flux, so no good recommendation can be
387 bool "kernel crash dumps"
388 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
390 Generate crash dump after being started by kexec.
394 menu "Power management and ACPI options"
396 source "kernel/power/Kconfig"
398 source "drivers/acpi/Kconfig"
401 menu "CPU Frequency scaling"
402 source "drivers/cpufreq/Kconfig"
409 tristate "Memory special operations driver"
411 select IA64_UNCACHED_ALLOCATOR
413 If you have an ia64 and you want to enable memory special
414 operations support (formerly known as fetchop), say Y here,