Compile Linux kernel with elfuse

[henrybear327]

To prove that elfuse is able to handle proper linux workload, we will perform the following:

• use gcc:14 docker image for Elfuse sysroot
• compile linux kernel 6.12 in Elfuse
• start the compiled linux kernel in qemu

---

Initial testing (with some patching to the elfuse codebase) shows

[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x610f0000]
[    0.000000] Linux version 6.12.0 (root@elfuse) (gcc (GCC) 14.4.0, GNU ld (GNU Binutils for Debian) 2.44) #1 SMP PREEMPT Wed Aug 26 14:59:06 UTC 2026
[    0.000000] KASLR enabled
[    0.000000] Machine model: linux,dummy-virt
[    0.000000] Kernel command line: console=ttyAMA0 panic=5 quiet
[    0.009961] SMP: Total of 4 processors activated.
[    0.011538] Memory: 1942984K/2097152K available (17536K kernel code, 4902K rwdata, 11872K rodata, 2880K init, 742K bss, ...)
[    0.290896] Freeing unused kernel memory: 2880K
[    0.290914] Run /init as init process

Over ssh into the running system:

Linux (none) 6.12.0 #1 SMP PREEMPT Wed Aug 26 14:59:06 UTC 2026 aarch64 GNU/Linux

[henrybear327]

I will upstream the patches to make this work completely feasible for CI nightly run

[jserv]

Interesting! What is the elapsed time to build the Linux kernel from source using a minimal kernel configuration? If the build time is reasonable, we could add this as a new CI/CD test item.