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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         default y
 25 
 26 config PPC_SPLPAR
 27         depends on PPC_PSERIES
 28         bool "Support for shared-processor logical partitions"
 29         default n
 30         help
 31           Enabling this option will make the kernel run more efficiently
 32           on logically-partitioned pSeries systems which use shared
 33           processors, that is, which share physical processors between
 34           two or more partitions.
 35 
 36 config PSERIES_MSI
 37        bool
 38        depends on PCI_MSI && PPC_PSERIES && EEH
 39        default y
 40 
 41 config PSERIES_ENERGY
 42         tristate "pSeries energy management capabilities driver"
 43         depends on PPC_PSERIES
 44         default y
 45         help
 46           Provides interface to platform energy management capabilities
 47           on supported PSERIES platforms.
 48           Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list
 49           and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint
 50 
 51 config SCANLOG
 52         tristate "Scanlog dump interface"
 53         depends on RTAS_PROC && PPC_PSERIES
 54 
 55 config IO_EVENT_IRQ
 56         bool "IO Event Interrupt support"
 57         depends on PPC_PSERIES
 58         default y
 59         help
 60           Select this option, if you want to enable support for IO Event
 61           interrupts. IO event interrupt is a mechanism provided by RTAS
 62           to return information about hardware error and non-error events
 63           which may need OS attention. RTAS returns events for multiple
 64           event types and scopes. Device drivers can register their handlers
 65           to receive events.
 66 
 67           This option will only enable the IO event platform code. You
 68           will still need to enable or compile the actual drivers
 69           that use this infrastructure to handle IO event interrupts.
 70 
 71           Say Y if you are unsure.
 72 
 73 config LPARCFG
 74         bool "LPAR Configuration Data"
 75         depends on PPC_PSERIES
 76         help
 77         Provide system capacity information via human readable
 78         <key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
 79 
 80 config PPC_PSERIES_DEBUG
 81         depends on PPC_PSERIES && PPC_EARLY_DEBUG
 82         bool "Enable extra debug logging in platforms/pseries"
 83         help
 84           Say Y here if you want the pseries core to produce a bunch of
 85           debug messages to the system log. Select this if you are having a
 86           problem with the pseries core and want to see more of what is
 87           going on. This does not enable debugging in lpar.c, which must
 88           be manually done due to its verbosity.
 89         default y
 90 
 91 config PPC_SMLPAR
 92         bool "Support for shared-memory logical partitions"
 93         depends on PPC_PSERIES
 94         select LPARCFG
 95         default n
 96         help
 97           Select this option to enable shared memory partition support.
 98           With this option a system running in an LPAR can be given more
 99           memory than physically available and will allow firmware to
100           balance memory across many LPARs.
101 
102 config CMM
103         tristate "Collaborative memory management"
104         depends on PPC_SMLPAR
105         default y
106         help
107           Select this option, if you want to enable the kernel interface
108           to reduce the memory size of the system. This is accomplished
109           by allocating pages of memory and put them "on hold". This only
110           makes sense for a system running in an LPAR where the unused pages
111           will be reused for other LPARs. The interface allows firmware to
112           balance memory across many LPARs.
113 
114 config DTL
115         bool "Dispatch Trace Log"
116         depends on PPC_SPLPAR && DEBUG_FS
117         help
118           SPLPAR machines can log hypervisor preempt & dispatch events to a
119           kernel buffer. Saying Y here will enable logging these events,
120           which are accessible through a debugfs file.
121 
122           Say N if you are unsure.

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