[Bug 2106208] Re: Relocation overflow in GRUB when booting with RISC-V EDK II and emulating NUMA.

[Mate Kukri]

NUMA nodes usually represents two or more pieces of silicon, each with
memory connected to them directly, but where both are also
interconnected into a proper SMP system using some bus like DMI.

Which means memory all memory is logically accessible to all processors
same ways as UMA SMP system, but accesses to local memory inside a NUMA
domain has lower latency due both physics and avoiding DMI overhead.

With all that, I don't think GRUB cares that much about memory latency
:)

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Title:
  Relocation overflow in GRUB when booting with RISC-V EDK II and
  emulating NUMA.

Status in edk2 package in Ubuntu:
  New
Status in grub2 package in Ubuntu:
  New
Status in edk2 source package in Noble:
  New
Status in grub2 source package in Noble:
  New
Status in edk2 source package in Plucky:
  New
Status in grub2 source package in Plucky:
  New

Bug description:
  I tried to boot our preinstalled RISC-V server images with EDK II
  using the following command:

  qemu-system-riscv64 \
  -machine virt \
  -m 8192 \
  -nographic \
  -smp 8,sockets=2,cores=4,threads=1 \
  -numa node,cpus=0-3,mem=4096 \
  -numa node,cpus=4-7,mem=4096 \
  -drive if=pflash,format=raw,unit=0,file=/usr/share/qemu-efi-riscv64/RISCV_VIRT_CODE.fd,readonly=on \
  -drive if=pflash,format=raw,unit=1,file=RISCV_VIRT_VARS.fd \
  -device virtio-net-device,netdev=eth0 \
  -netdev user,id=eth0 \
  -device virtio-rng-pci \
  -drive file=ubuntu-24.04.2-preinstalled-server-riscv64.img,format=raw,if=virtio

  I tried these combinations:

  Feb 15 11:10 ubuntu-24.04.2-preinstalled-server-riscv64.img.xz with EDK II 2025.02-3ubuntu1 from plucky
  Feb 15 11:10 ubuntu-24.04.2-preinstalled-server-riscv64.img.xz with EDK II 2024.02-2 from noble
  Mar 31 08:14 plucky-preinstalled-server-riscv64.img with EDK II 2025.02-3ubuntu1 from plucky
  Mar 31 08:14 plucky-preinstalled-server-riscv64.img with EDK II 2024.02-2 from noble

  On all of these GRUB fails with `relocation overflow`.

  I am using QEMU 1:9.2.1+ds-1ubuntu4 on a amd64 Plucky system.

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