On Wed, 29 Jul 2020 08:20:53 +1000 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote: > Hi Andrew, > > On Tue, 28 Jul 2020 14:55:53 -0700 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > config CONTIG_ALLOC > > def_bool (MEMORY_ISOLATION && COMPACTION) || CMA > > > > says this is an improper combination. And `make oldconfig' fixes it up. > > > > What's happening here? > > CONFIG_VIRTIO_MEM selects CONFIG_CONTIG_ALLOC ... Argh, select strikes again. So I guess VIRTIO_MEM should also select COMPACTION?