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powerpc/pseries: Add collaborative memory manager
[net-next-2.6.git] / arch / powerpc / platforms / pseries / Kconfig
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1config PPC_PSERIES
2 depends on PPC_MULTIPLATFORM && PPC64
3 bool "IBM pSeries & new (POWER5-based) iSeries"
4 select MPIC
5 select PPC_I8259
6 select PPC_RTAS
7 select RTAS_ERROR_LOGGING
8 select PPC_UDBG_16550
9 select PPC_NATIVE
b500563b 10 select PPC_PCI_CHOICE if EMBEDDED
35a1245a 11 default y
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12
13config PPC_SPLPAR
14 depends on PPC_PSERIES
15 bool "Support for shared-processor logical partitions"
16 default n
17 help
18 Enabling this option will make the kernel run more efficiently
19 on logically-partitioned pSeries systems which use shared
20 processors, that is, which share physical processors between
21 two or more partitions.
22
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23config EEH
24 bool "PCI Extended Error Handling (EEH)" if EMBEDDED
86932082 25 depends on PPC_PSERIES && PCI
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26 default y if !EMBEDDED
27
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28config SCANLOG
29 tristate "Scanlog dump interface"
30 depends on RTAS_PROC && PPC_PSERIES
31
32config LPARCFG
82dfdcae 33 bool "LPAR Configuration Data"
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34 depends on PPC_PSERIES || PPC_ISERIES
35 help
36 Provide system capacity information via human readable
37 <key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
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38
39config PPC_PSERIES_DEBUG
40 depends on PPC_PSERIES && PPC_EARLY_DEBUG
41 bool "Enable extra debug logging in platforms/pseries"
42 default y
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43
44config PPC_SMLPAR
45 bool "Support for shared-memory logical partitions"
46 depends on PPC_PSERIES
47 select LPARCFG
48 default n
49 help
50 Select this option to enable shared memory partition support.
51 With this option a system running in an LPAR can be given more
52 memory than physically available and will allow firmware to
53 balance memory across many LPARs.
54
55config CMM
56 tristate "Collaborative memory management"
57 depends on PPC_SMLPAR
58 default y
59 help
60 Select this option, if you want to enable the kernel interface
61 to reduce the memory size of the system. This is accomplished
62 by allocating pages of memory and put them "on hold". This only
63 makes sense for a system running in an LPAR where the unused pages
64 will be reused for other LPARs. The interface allows firmware to
65 balance memory across many LPARs.