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
27 config PARAVIRT_SPINLOCKS
31 bool "Support for shared-processor logical partitions"
32 depends on PPC_PSERIES
33 select PARAVIRT_SPINLOCKS if PPC_QUEUED_SPINLOCKS
36 Enabling this option will make the kernel run more efficiently
37 on logically-partitioned pSeries systems which use shared
38 processors, that is, which share physical processors between
39 two or more partitions.
41 Say Y if you are unsure.
44 bool "Dispatch Trace Log"
45 depends on PPC_SPLPAR && DEBUG_FS
47 SPLPAR machines can log hypervisor preempt & dispatch events to a
48 kernel buffer. Saying Y here will enable logging these events,
49 which are accessible through a debugfs file.
51 Say N if you are unsure.
54 tristate "pSeries energy management capabilities driver"
55 depends on PPC_PSERIES
58 Provides interface to platform energy management capabilities
59 on supported PSERIES platforms.
60 Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list
61 and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint
64 bool "IO Event Interrupt support"
65 depends on PPC_PSERIES
68 Select this option, if you want to enable support for IO Event
69 interrupts. IO event interrupt is a mechanism provided by RTAS
70 to return information about hardware error and non-error events
71 which may need OS attention. RTAS returns events for multiple
72 event types and scopes. Device drivers can register their handlers
75 This option will only enable the IO event platform code. You
76 will still need to enable or compile the actual drivers
77 that use this infrastructure to handle IO event interrupts.
79 Say Y if you are unsure.
82 bool "LPAR Configuration Data"
83 depends on PPC_PSERIES
85 Provide system capacity information via human readable
86 <key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
88 config PPC_PSERIES_DEBUG
89 depends on PPC_PSERIES && PPC_EARLY_DEBUG
90 bool "Enable extra debug logging in platforms/pseries"
93 Say Y here if you want the pseries core to produce a bunch of
94 debug messages to the system log. Select this if you are having a
95 problem with the pseries core and want to see more of what is
96 going on. This does not enable debugging in lpar.c, which must
97 be manually done due to its verbosity.
100 bool "Support for shared-memory logical partitions"
101 depends on PPC_PSERIES
104 Select this option to enable shared memory partition support.
105 With this option a system running in an LPAR can be given more
106 memory than physically available and will allow firmware to
107 balance memory across many LPARs.
110 tristate "Collaborative memory management"
111 depends on PPC_SMLPAR
112 select MEMORY_BALLOON
115 Select this option, if you want to enable the kernel interface
116 to reduce the memory size of the system. This is accomplished
117 by allocating pages of memory and put them "on hold". This only
118 makes sense for a system running in an LPAR where the unused pages
119 will be reused for other LPARs. The interface allows firmware to
120 balance memory across many LPARs.
123 bool "Hypervisor supplied PMU events (24x7 & GPCI)"
125 depends on PERF_EVENTS && PPC_PSERIES
127 Enable access to hypervisor supplied counters in perf. Currently,
128 this enables code that uses the hcall GetPerfCounterInfo and 24x7
129 interfaces to retrieve counters. GPCI exists on Power 6 and later
130 systems. 24x7 is available on Power 8 and later systems.
135 depends on PPC_PSERIES
140 depends on PPC_PSERIES && !CPU_LITTLE_ENDIAN
141 bool "Support for GX bus based adapters"
143 Bus device driver for GX bus based adapters.
146 depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM
147 tristate "Support for the PAPR Storage Class Memory interface"
149 Enable access to hypervisor provided storage class memory.
152 bool "Secure virtual machine (SVM) support for POWER"
153 depends on PPC_PSERIES
155 select ARCH_HAS_MEM_ENCRYPT
156 select ARCH_HAS_FORCE_DMA_UNENCRYPTED
157 select ARCH_HAS_CC_PLATFORM
159 There are certain POWER platforms which support secure guests using
160 the Protected Execution Facility, with the help of an Ultravisor
161 executing below the hypervisor layer. This enables support for