Srikar Dronamraju <sri...@linux.vnet.ibm.com> writes: > As per PAPR, there are 2 device tree property > ibm,max-associativity-domains (which defines the maximum number of > domains that the firmware i.e PowerVM can support) and > ibm,current-associativity-domains (which defines the maximum number of > domains that the platform can support). Value of > ibm,max-associativity-domains property is always greater than or equal > to ibm,current-associativity-domains property.
Where is it documented? It's definitely not in LoPAPR. > Powerpc currently uses ibm,max-associativity-domains property while > setting the possible number of nodes. This is currently set at 32. > However the possible number of nodes for a platform may be significantly > less. Hence set the possible number of nodes based on > ibm,current-associativity-domains property. > > $ lsprop /proc/device-tree/rtas/ibm,*associ*-domains > /proc/device-tree/rtas/ibm,current-associativity-domains > 00000005 00000001 00000002 00000002 00000002 00000010 > /proc/device-tree/rtas/ibm,max-associativity-domains > 00000005 00000001 00000008 00000020 00000020 00000100 > > $ cat /sys/devices/system/node/possible ##Before patch > 0-31 > > $ cat /sys/devices/system/node/possible ##After patch > 0-1 > > Note the maximum nodes this platform can support is only 2 but the > possible nodes is set to 32. But what about LPM to a system with more nodes? cheers
