Commits
Aneesh Kumar K.V committed c0b1b23b9c8
powerpc/mm/nvdimm: Add an informative message if we fail to allocate altmap block Allocation from altmap area can fail based on vmemmap page size used. Add kernel info message to indicate the failure. That allows the user to identify whether they are really using persistent memory reserved space for per-page metadata. The message looks like: [ 136.587212] altmap block allocation failed, falling back to system memory Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Reviewed-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>