kernel: Switch SCSI_VIRTIO driver to built-in

[foersleo]

Issue number:

Closes #3045

Description of changes:

Enable usage of the Bottlerocket metal variant on other virtualization stacks where the boot device is provided through the scsis virtio driver.

Testing done:

I have built both metal kernels and as expected the only config changes we see in the resulting configs is the changed CONFIG_SCSI_VIRTIO:

config-x86_64-metal-k8s-1.23-diff:	  0 removed,   0 added,   1 changed
config-x86_64-metal-k8s-1.26-diff:	  0 removed,   0 added,   1 changed

==> 3045_scsi_virtio/config-x86_64-metal-k8s-1.23-diff <==
 SCSI_VIRTIO m -> y

==> 3045_scsi_virtio/config-x86_64-metal-k8s-1.26-diff <==
 SCSI_VIRTIO m -> y

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.

[stmcginnis]

Nice!

[markusboehme]

Tested with the following ad-hoc change to tools/start-local-vm:

diff --git a/tools/start-local-vm b/tools/start-local-vm
index c1ef649f..bdd58b98 100755
--- a/tools/start-local-vm
+++ b/tools/start-local-vm
@@ -228,7 +228,10 @@ launch_vm() {
         -cpu host
         -smp "${vm_cpus}"
         -m "${vm_mem}"
-        -drive index=0,if=virtio,format=raw,file="${boot_image}"
+        # -drive index=0,if=virtio,format=raw,file="${boot_image}"
+        -device virtio-scsi-pci,id=scsi0,num_queues=8
+        -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive0
+        -drive id=drive0,file="${boot_image}",if=none
     )
 
     # Plug the virtual primary NIC in as BDF 00:10.0 so udev will give it a

✔️

[tommie]

I just built bb7261e, and can confirm it boots on Hetzner Cloud. Thank you.

(I'm now stuck on something in systemd, but that's obviously after root is mounted, and may be a config issue.)