Re: [PATCH v2] powerpc: drmem: avoid NULL pointer dereference when drmem is unavailable

Michal Suchanek msuchanek@suse.de writes:

From: Libor Pechacek lpechacek@suse.cz

In guests without hotplugagble memory drmem structure is only zero initialized. Trying to manipulate DLPAR parameters results in a crash.

[...]

Fixes: 6c6ea53725b3 ("powerpc/mm: Separate ibm, dynamic-memory data from DT format") Cc: Michal Suchanek msuchanek@suse.cz Cc: stable@vger.kernel.org Signed-off-by: Libor Pechacek lpechacek@suse.cz Signed-off-by: Michal Suchanek msuchanek@suse.de

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v2: rename last_lmb -> limit, clarify error condition.

Acked-by: Nathan Lynch nathanl@linux.ibm.com

Thanks!