dmesg prints this: HugeTLB: allocating 64 of page size 1.00 GiB failed. Only allocated 0 hugepages Huge pages were allocated on kernel command line (1/2 of 128GB system): 'default_hugepagesz=1G hugepagesz=1G hugepages=64' This is 3970X and no real support/need for NUMA, thus only fake NUMA node 0 is present. Reverting the commit helps. New syntax also works ( hugepages=0:64 ) I can test any patches for this bug. Also unrelated, is there any progress on allocating 1GB pages on demand so that I could allocate them only when I run a VM? i don't mind having these pages to be marked as to be used for userspace only, since as far as I remember its the kernel usage that makes some page unmoveable. Last time (many years ago) I tried to create a zone with only userspace pages (I don't remember what options I used) but it didn't work. Is there a way to debug what is causing unmoveable pages and doesn't let /proc/sys/vm/nr_hugepages work (I tried it today and as usual the number it can allocate steadly decreases over time). Thanks, Best regards, Maxim Levitsky
