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Diffstat (limited to 'docs/specs/ppc-spapr-hotplug.txt')
| -rw-r--r-- | docs/specs/ppc-spapr-hotplug.txt | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/docs/specs/ppc-spapr-hotplug.txt b/docs/specs/ppc-spapr-hotplug.txt index d35771cc2b..46e07196bb 100644 --- a/docs/specs/ppc-spapr-hotplug.txt +++ b/docs/specs/ppc-spapr-hotplug.txt @@ -284,4 +284,22 @@ struct rtas_event_log_v6_hp { } drc; } QEMU_PACKED; +== ibm,lrdr-capacity == + +ibm,lrdr-capacity is a property in the /rtas device tree node that identifies +the dynamic reconfiguration capabilities of the guest. It consists of a triple +consisting of <phys>, <size> and <maxcpus>. + + <phys>, encoded in BE format represents the maximum address in bytes and + hence the maximum memory that can be allocated to the guest. + + <size>, encoded in BE format represents the size increments in which + memory can be hot-plugged to the guest. + + <maxcpus>, a BE-encoded integer, represents the maximum number of + processors that the guest can have. + +pseries guests use this property to note the maximum allowed CPUs for the +guest. + [1] http://thread.gmane.org/gmane.linux.ports.ppc.embedded/75350/focus=106867 |