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
10 select GENERIC_ALLOCATOR
18 select PPC_RTAS_DAEMON
19 select RTAS_ERROR_LOGGING
30 config PARAVIRT_SPINLOCKS
33 config PARAVIRT_TIME_ACCOUNTING
38 bool "Support for shared-processor logical partitions"
39 depends on PPC_PSERIES
40 select PARAVIRT_SPINLOCKS if PPC_QUEUED_SPINLOCKS
41 select PARAVIRT_TIME_ACCOUNTING if VIRT_CPU_ACCOUNTING_GEN
44 Enabling this option will make the kernel run more efficiently
45 on logically-partitioned pSeries systems which use shared
46 processors, that is, which share physical processors between
47 two or more partitions.
49 Say Y if you are unsure.
52 bool "Dispatch Trace Log"
53 depends on PPC_SPLPAR && DEBUG_FS
55 SPLPAR machines can log hypervisor preempt & dispatch events to a
56 kernel buffer. Saying Y here will enable logging these events,
57 which are accessible through a debugfs file.
59 Say N if you are unsure.
62 tristate "pSeries energy management capabilities driver"
63 depends on PPC_PSERIES
66 Provides interface to platform energy management capabilities
67 on supported PSERIES platforms.
68 Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list
69 and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint
72 bool "IO Event Interrupt support"
73 depends on PPC_PSERIES
76 Select this option, if you want to enable support for IO Event
77 interrupts. IO event interrupt is a mechanism provided by RTAS
78 to return information about hardware error and non-error events
79 which may need OS attention. RTAS returns events for multiple
80 event types and scopes. Device drivers can register their handlers
83 This option will only enable the IO event platform code. You
84 will still need to enable or compile the actual drivers
85 that use this infrastructure to handle IO event interrupts.
87 Say Y if you are unsure.
90 bool "LPAR Configuration Data"
91 depends on PPC_PSERIES
93 Provide system capacity information via human readable
94 <key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
96 config PPC_PSERIES_DEBUG
97 depends on PPC_PSERIES && PPC_EARLY_DEBUG
98 bool "Enable extra debug logging in platforms/pseries"
101 Say Y here if you want the pseries core to produce a bunch of
102 debug messages to the system log. Select this if you are having a
103 problem with the pseries core and want to see more of what is
104 going on. This does not enable debugging in lpar.c, which must
105 be manually done due to its verbosity.
108 bool "Support for shared-memory logical partitions"
109 depends on PPC_PSERIES
112 Select this option to enable shared memory partition support.
113 With this option a system running in an LPAR can be given more
114 memory than physically available and will allow firmware to
115 balance memory across many LPARs.
118 tristate "Collaborative memory management"
119 depends on PPC_SMLPAR
120 select MEMORY_BALLOON
123 Select this option, if you want to enable the kernel interface
124 to reduce the memory size of the system. This is accomplished
125 by allocating pages of memory and put them "on hold". This only
126 makes sense for a system running in an LPAR where the unused pages
127 will be reused for other LPARs. The interface allows firmware to
128 balance memory across many LPARs.
131 bool "Hypervisor supplied PMU events (24x7 & GPCI)"
133 depends on PERF_EVENTS && PPC_PSERIES
135 Enable access to hypervisor supplied counters in perf. Currently,
136 this enables code that uses the hcall GetPerfCounterInfo and 24x7
137 interfaces to retrieve counters. GPCI exists on Power 6 and later
138 systems. 24x7 is available on Power 8 and later systems.
143 depends on PPC_PSERIES
148 depends on PPC_PSERIES && !CPU_LITTLE_ENDIAN
149 bool "Support for GX bus based adapters"
151 Bus device driver for GX bus based adapters.
154 depends on PPC_PSERIES
157 # PowerVM provides an isolated Platform Keystore (PKS) storage
158 # allocation for each LPAR with individually managed access
159 # controls to store sensitive information securely. It can be
160 # used to store asymmetric public keys or secrets as required
161 # by different usecases.
163 # This option is selected by in-kernel consumers that require
167 depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM
168 tristate "Support for the PAPR Storage Class Memory interface"
170 Enable access to hypervisor provided storage class memory.
173 bool "Secure virtual machine (SVM) support for POWER"
174 depends on PPC_PSERIES
176 select ARCH_HAS_MEM_ENCRYPT
177 select ARCH_HAS_FORCE_DMA_UNENCRYPTED
178 select ARCH_HAS_CC_PLATFORM
180 There are certain POWER platforms which support secure guests using
181 the Protected Execution Facility, with the help of an Ultravisor
182 executing below the hypervisor layer. This enables support for