Re: [RFC 4/7] powerpc/mm: Set MAX_ZONE_PFN to 0 for all zones beyond TOP_ZONE

On 03/05/16 16:29, Anshuman Khandual wrote:

From: Oliver O'Halloran <oohall@gmail.com>

All the memory zones past TOP_ZONE are managed by generic mm code. Zone
max PFN should be set to 0 instead of ~0UL since that's what the generic
mm code expects. Without this, kernel assigns all pages into ZONE_DEVICE
zone which is not part of buddy allocator, hence kernel cannot allocate
any memory and even fails to boot.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>

Reviewed-by: Balbir Singh <bsingharora@gmail.com>