1 # SPDX-License-Identifier: GPL-2.0
3 depends on PPC64 && PPC_BOOK3S
4 bool "IBM pSeries & new (POWER5-based) iSeries"
5 select HAVE_PCSPKR_PLATFORM
17 select PPC_RTAS_DAEMON
18 select RTAS_ERROR_LOGGING
28 config PARAVIRT_SPINLOCKS
32 bool "Support for shared-processor logical partitions"
33 depends on PPC_PSERIES
34 select PARAVIRT_SPINLOCKS if PPC_QUEUED_SPINLOCKS
37 Enabling this option will make the kernel run more efficiently
38 on logically-partitioned pSeries systems which use shared
39 processors, that is, which share physical processors between
40 two or more partitions.
42 Say Y if you are unsure.
45 bool "Dispatch Trace Log"
46 depends on PPC_SPLPAR && DEBUG_FS
48 SPLPAR machines can log hypervisor preempt & dispatch events to a
49 kernel buffer. Saying Y here will enable logging these events,
50 which are accessible through a debugfs file.
52 Say N if you are unsure.
55 tristate "pSeries energy management capabilities driver"
56 depends on PPC_PSERIES
59 Provides interface to platform energy management capabilities
60 on supported PSERIES platforms.
61 Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list
62 and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint
65 tristate "Scanlog dump interface"
66 depends on RTAS_PROC && PPC_PSERIES
69 bool "IO Event Interrupt support"
70 depends on PPC_PSERIES
73 Select this option, if you want to enable support for IO Event
74 interrupts. IO event interrupt is a mechanism provided by RTAS
75 to return information about hardware error and non-error events
76 which may need OS attention. RTAS returns events for multiple
77 event types and scopes. Device drivers can register their handlers
80 This option will only enable the IO event platform code. You
81 will still need to enable or compile the actual drivers
82 that use this infrastructure to handle IO event interrupts.
84 Say Y if you are unsure.
87 bool "LPAR Configuration Data"
88 depends on PPC_PSERIES
90 Provide system capacity information via human readable
91 <key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
93 config PPC_PSERIES_DEBUG
94 depends on PPC_PSERIES && PPC_EARLY_DEBUG
95 bool "Enable extra debug logging in platforms/pseries"
98 Say Y here if you want the pseries core to produce a bunch of
99 debug messages to the system log. Select this if you are having a
100 problem with the pseries core and want to see more of what is
101 going on. This does not enable debugging in lpar.c, which must
102 be manually done due to its verbosity.
105 bool "Support for shared-memory logical partitions"
106 depends on PPC_PSERIES
109 Select this option to enable shared memory partition support.
110 With this option a system running in an LPAR can be given more
111 memory than physically available and will allow firmware to
112 balance memory across many LPARs.
115 tristate "Collaborative memory management"
116 depends on PPC_SMLPAR
117 select MEMORY_BALLOON
120 Select this option, if you want to enable the kernel interface
121 to reduce the memory size of the system. This is accomplished
122 by allocating pages of memory and put them "on hold". This only
123 makes sense for a system running in an LPAR where the unused pages
124 will be reused for other LPARs. The interface allows firmware to
125 balance memory across many LPARs.
128 bool "Hypervisor supplied PMU events (24x7 & GPCI)"
130 depends on PERF_EVENTS && PPC_PSERIES
132 Enable access to hypervisor supplied counters in perf. Currently,
133 this enables code that uses the hcall GetPerfCounterInfo and 24x7
134 interfaces to retrieve counters. GPCI exists on Power 6 and later
135 systems. 24x7 is available on Power 8 and later systems.
140 depends on PPC_PSERIES
145 depends on PPC_PSERIES && !CPU_LITTLE_ENDIAN
146 bool "Support for GX bus based adapters"
148 Bus device driver for GX bus based adapters.
151 depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM
152 tristate "Support for the PAPR Storage Class Memory interface"
154 Enable access to hypervisor provided storage class memory.
157 bool "Secure virtual machine (SVM) support for POWER"
158 depends on PPC_PSERIES
160 select ARCH_HAS_MEM_ENCRYPT
161 select ARCH_HAS_FORCE_DMA_UNENCRYPTED
163 There are certain POWER platforms which support secure guests using
164 the Protected Execution Facility, with the help of an Ultravisor
165 executing below the hypervisor layer. This enables support for