Hi, I'm seeing a regression on Nvidia IGX system, which no longer boots. bisect points at commit 767507654c22 ("arch_numa: switch over to numa_memblks"). It hangs very early, with 4k or 64k pages, with no kernel messages printed: EFI stub: Booting Linux Kernel... EFI stub: Using DTB from configuration table EFI stub: Exiting boot services... <hangs here> Here's a log from successful boot with previous commit: https://people.redhat.com/jstancek/aarch64_numa_boot/console-log-good.txt and config: https://people.redhat.com/jstancek/aarch64_numa_boot/config # lscpu Architecture: aarch64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 12 On-line CPU(s) list: 0-11 Vendor ID: ARM BIOS Vendor ID: NVIDIA Model name: Cortex-A78AE BIOS Model name: Not Specified Not Specified CPU @ 0.0GHz BIOS CPU family: 257 Model: 1 Thread(s) per core: 1 Core(s) per cluster: 12 Socket(s): 1 Cluster(s): 1 Stepping: r0p1 CPU(s) scaling MHz: 100% CPU max MHz: 1971.2000 CPU min MHz: 115.2000 BogoMIPS: 62.50 Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp uscat ilrcpc flagm paca pacg Caches (sum of all): L1d: 768 KiB (12 instances) L1i: 768 KiB (12 instances) L2: 3 MiB (12 instances) L3: 6 MiB (3 instances) NUMA: NUMA node(s): 1 NUMA node0 CPU(s): 0-11 Vulnerabilities: Gather data sampling: Not affected Itlb multihit: Not affected L1tf: Not affected Mds: Not affected Meltdown: Not affected Mmio stale data: Not affected Reg file data sampling: Not affected Retbleed: Not affected Spec rstack overflow: Not affected Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl Spectre v1: Mitigation; __user pointer sanitization Spectre v2: Mitigation; CSV2, BHB Srbds: Not affected Tsx async abort: Not affected Regards, Jan