[Skiboot] [PATCH] core: Add node-style memory reservation to device tree

Jeremy Kerr jk at ozlabs.org
Thu May 14 13:15:10 AEST 2015


Hi Stewart,

> 387871856: (387871851): [    0.000000] Reserved memory: failed to reserve memory
>  for node 'ibm,firmware-stacks at 31a00000': base 0x0000000031a00000, size 0 MiB
> 388038641: (388038636): [    0.000000] Reserved memory: failed to reserve memory
>  for node 'ibm,firmware-data at 30e00000': base 0x0000000030e00000, size 12 MiB
> 388204211: (388204206): [    0.000000] Reserved memory: failed to reserve memory
>  for node 'ibm,firmware-heap at 30200000': base 0x0000000030200000, size 12 MiB
> 388369776: (388369771): [    0.000000] Reserved memory: failed to reserve memory
>  for node 'ibm,firmware-code at 30000000': base 0x0000000030000000, size 2 MiB
> 388534158: (388534153): [    0.000000] Reserved memory: failed to reserve memory
>  for node 'ibm,firmware-allocs-memory at 39a00000': base 0x0000000039a00000, size 1
>  MiB
> 
> Are ^ the result of trying to reserve it twice?

Yes - the change I've posted adds the node-style reservations alongside
the property-style reservations. Since current kernels support both,
we'll get those messages reported.

Ben - if we've supported the node-style reservations in Linux for long
enough, perhaps we should remove the property-style ones in OPAL?

Regards,


Jeremy


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