diff options
| author | Brian King <brking@linux.vnet.ibm.com> | 2008-07-24 04:30:29 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-25 15:44:42 +1000 |
| commit | 84af458bb23bf5f0ba1af4320dd2a57f7c4363e5 (patch) | |
| tree | eeed1a0b6bb2f4a57d28dba3d3db9496281f6c1e /arch/powerpc/platforms/pseries/Kconfig | |
| parent | 86630a32320f83736c4c24e2c8bae218e4c56c7c (diff) | |
powerpc/pseries: Add collaborative memory manager
Adds a collaborative memory manager, which acts as a simple balloon driver
for System p machines that support cooperative memory overcommitment
(CMO).
Adds a platform configuration option for CMO called PPC_SMLPAR.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/pseries/Kconfig')
| -rw-r--r-- | arch/powerpc/platforms/pseries/Kconfig | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index 757c0296e0b8..97619fd51e39 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -40,3 +40,26 @@ config PPC_PSERIES_DEBUG depends on PPC_PSERIES && PPC_EARLY_DEBUG bool "Enable extra debug logging in platforms/pseries" default y + +config PPC_SMLPAR + bool "Support for shared-memory logical partitions" + depends on PPC_PSERIES + select LPARCFG + default n + help + Select this option to enable shared memory partition support. + With this option a system running in an LPAR can be given more + memory than physically available and will allow firmware to + balance memory across many LPARs. + +config CMM + tristate "Collaborative memory management" + depends on PPC_SMLPAR + default y + help + Select this option, if you want to enable the kernel interface + to reduce the memory size of the system. This is accomplished + by allocating pages of memory and put them "on hold". This only + makes sense for a system running in an LPAR where the unused pages + will be reused for other LPARs. The interface allows firmware to + balance memory across many LPARs. |