On Thu, Aug 10, 2017 at 11:50:19AM -0500, Reza Arbab wrote:
On Thu, Aug 10, 2017 at 02:53:48PM +0530, Bharata B Rao wrote:diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index f830562..24ecf53 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -524,6 +524,7 @@ static int __init early_init_dt_scan_drconf_memory(unsigned long node) size = 0x80000000ul - base; } memblock_add(base, size); + memblock_mark_hotplug(base, size); } while (--rngs); } memblock_dump_all();Doing this has the effect of putting all the affected memory into ZONE_MOVABLE. See find_zone_movable_pfns_for_nodes(). This means no kernel allocations can occur there. Is that okay?
I should clarify. The behavior change I mention applies when movable_node_is_enabled().
-- Reza Arbab
