On Wed, Mar 18, 2020 at 12:41:09PM +0100, Guido Günther wrote: > Hi Roman, > 882d60d2ce725381236a158204d7ec13ff19ab25 in linux-next broke compilation > on arm64 CMA && !NUMA like > > CC kernel/irq/irqdesc.o > mm/hugetlb.c: In function ‘hugetlb_cma_reserve’: > mm/hugetlb.c:5449:3: error: implicit declaration of function ‘for_each_mem_pfn_range’; did you mean ‘for_each_mem_range’? [-Werror=implicit-function-declaration] > for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) { > ^~~~~~~~~~~~~~~~~~~~~~ > for_each_mem_range > mm/hugetlb.c:5449:61: error: expected ‘;’ before ‘{’ token > for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) { > ^~ > Reverting that fixes the build for the moment. Would making all of this > dependent on CMA && NUMA be the right fix? Hello Guido! Thank you for the report! We've been discussing the issue for a couple of days, and I've proposed a fix. I've just resent it to linux-mm@ (you're in cc), so hopefully it will be merged today. Thanks!