Re: [PATCH v2] powerpc/mm/nvdimm: Add an informative message if we fail to allocate altmap block

2019-07-07 Thread Michael Ellerman
On Mon, 2019-07-01 at 14:33:38 UTC, "Aneesh Kumar K.V" wrote: > 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

Re: [PATCH v2] powerpc/mm/nvdimm: Add an informative message if we fail to allocate altmap block

2019-07-02 Thread Oliver O'Halloran
On Tue, Jul 2, 2019 at 12:33 AM Aneesh Kumar K.V wrote: > > 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

[PATCH v2] powerpc/mm/nvdimm: Add an informative message if we fail to allocate altmap block

2019-07-01 Thread Aneesh Kumar K.V
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