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

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