Is there any upper memory bound that spike can allocate? about riscv-isa-sim HOT 2 OPEN

The -m flag sets how much memory the target machine has. Beyond that, there is no practical limit--probably something in the terabyte range--beyond the host machine running out of memory, which of course would not manifest in this manner.

from riscv-isa-sim.

I see, nevertheless, can using initrd somehow overwrite spike's memory limits? Because interestingly, if I remove initrd flag, I can dump dts that sets memory to the asked amount, unless otherwise I get following error message:

Error: :9.27-38 Value out of range for 32-bit array element
Error: :10.25-36 Value out of range for 32-bit array element
FATAL ERROR: Syntax error parsing input tree
Child dtb process failed

And command and script that I am running for spike are the following:

./board/spike/riscv64/start.sh -m8192

#! /bin/sh

SCRIPT_DIR="$(dirname "$0")"
BR_BASEDIR="$(readlink -e "${SCRIPT_DIR}/../../..")"

export PATH="${BR_BASEDIR}/output/host/usr/bin:$PATH"
: "${SPIKE:=spike}"

exec "${SPIKE}"
--initrd "${BR_BASEDIR}"/output/images/rootfs.cpio
"${@}"
"${BR_BASEDIR}"/output/images/fw_payload.elf

from riscv-isa-sim.