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Linux/arch/powerpc/platforms/pseries/Kconfig

  1 config PPC_PSERIES
  2         depends on PPC64 && PPC_BOOK3S
  3         bool "IBM pSeries & new (POWER5-based) iSeries"
  4         select HAVE_PCSPKR_PLATFORM
  5         select MPIC
  6         select OF_DYNAMIC
  7         select PCI_MSI
  8         select PPC_XICS
  9         select PPC_ICP_NATIVE
 10         select PPC_ICP_HV
 11         select PPC_ICS_RTAS
 12         select PPC_I8259
 13         select PPC_RTAS
 14         select PPC_RTAS_DAEMON
 15         select RTAS_ERROR_LOGGING
 16         select PPC_UDBG_16550
 17         select PPC_NATIVE
 18         select PPC_PCI_CHOICE if EXPERT
 19         select ZLIB_DEFLATE
 20         select PPC_DOORBELL
 21         select HAVE_CONTEXT_TRACKING
 22         select HOTPLUG_CPU if SMP
 23         select ARCH_RANDOM
 24         select PPC_DOORBELL
 25         default y
 26 
 27 config PPC_SPLPAR
 28         depends on PPC_PSERIES
 29         bool "Support for shared-processor logical partitions"
 30         default n
 31         help
 32           Enabling this option will make the kernel run more efficiently
 33           on logically-partitioned pSeries systems which use shared
 34           processors, that is, which share physical processors between
 35           two or more partitions.
 36 
 37 config DTL
 38         bool "Dispatch Trace Log"
 39         depends on PPC_SPLPAR && DEBUG_FS
 40         help
 41           SPLPAR machines can log hypervisor preempt & dispatch events to a
 42           kernel buffer. Saying Y here will enable logging these events,
 43           which are accessible through a debugfs file.
 44 
 45           Say N if you are unsure.
 46 
 47 config PSERIES_MSI
 48        bool
 49        depends on PCI_MSI && PPC_PSERIES && EEH
 50        default y
 51 
 52 config PSERIES_ENERGY
 53         tristate "pSeries energy management capabilities driver"
 54         depends on PPC_PSERIES
 55         default y
 56         help
 57           Provides interface to platform energy management capabilities
 58           on supported PSERIES platforms.
 59           Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list
 60           and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint
 61 
 62 config SCANLOG
 63         tristate "Scanlog dump interface"
 64         depends on RTAS_PROC && PPC_PSERIES
 65 
 66 config IO_EVENT_IRQ
 67         bool "IO Event Interrupt support"
 68         depends on PPC_PSERIES
 69         default y
 70         help
 71           Select this option, if you want to enable support for IO Event
 72           interrupts. IO event interrupt is a mechanism provided by RTAS
 73           to return information about hardware error and non-error events
 74           which may need OS attention. RTAS returns events for multiple
 75           event types and scopes. Device drivers can register their handlers
 76           to receive events.
 77 
 78           This option will only enable the IO event platform code. You
 79           will still need to enable or compile the actual drivers
 80           that use this infrastructure to handle IO event interrupts.
 81 
 82           Say Y if you are unsure.
 83 
 84 config LPARCFG
 85         bool "LPAR Configuration Data"
 86         depends on PPC_PSERIES
 87         help
 88         Provide system capacity information via human readable
 89         <key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
 90 
 91 config PPC_PSERIES_DEBUG
 92         depends on PPC_PSERIES && PPC_EARLY_DEBUG
 93         bool "Enable extra debug logging in platforms/pseries"
 94         help
 95           Say Y here if you want the pseries core to produce a bunch of
 96           debug messages to the system log. Select this if you are having a
 97           problem with the pseries core and want to see more of what is
 98           going on. This does not enable debugging in lpar.c, which must
 99           be manually done due to its verbosity.
100         default y
101 
102 config PPC_SMLPAR
103         bool "Support for shared-memory logical partitions"
104         depends on PPC_PSERIES
105         select LPARCFG
106         default n
107         help
108           Select this option to enable shared memory partition support.
109           With this option a system running in an LPAR can be given more
110           memory than physically available and will allow firmware to
111           balance memory across many LPARs.
112 
113 config CMM
114         tristate "Collaborative memory management"
115         depends on PPC_SMLPAR
116         default y
117         help
118           Select this option, if you want to enable the kernel interface
119           to reduce the memory size of the system. This is accomplished
120           by allocating pages of memory and put them "on hold". This only
121           makes sense for a system running in an LPAR where the unused pages
122           will be reused for other LPARs. The interface allows firmware to
123           balance memory across many LPARs.
124 
125 config HV_PERF_CTRS
126        bool "Hypervisor supplied PMU events (24x7 & GPCI)"
127        default y
128        depends on PERF_EVENTS && PPC_PSERIES
129        help
130           Enable access to hypervisor supplied counters in perf. Currently,
131           this enables code that uses the hcall GetPerfCounterInfo and 24x7
132           interfaces to retrieve counters. GPCI exists on Power 6 and later
133           systems. 24x7 is available on Power 8 systems.
134 
135           If unsure, select Y.

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