enable several virtual devices for hosting virtual machines

[smcavoy]

This enable several features used for hosting virtual machines. The LXD platform specifically use these features.

LXD specifically targets Raspberry Pi as a platform

Enabling these features makes it easier for OS packagers to include functional LXD on Raspberry Pi easily.

[pelwell]

This kind of PR is relatively easy to approve, in that it just requests some modules to be enabled - the core kernel is unchanged. Although there are 6 new modules, they aren't huge:

31592 drivers/vhost/vhost_vsock.ko
11656 drivers/net/vsockmon.ko
8600  net/vmw_vsock/vsock_diag.ko
59136 net/vmw_vsock/vmw_vsock_virtio_transport_common.ko
68280 net/vmw_vsock/vsock.ko
13760 net/vmw_vsock/vsock_loopback.ko

However, I do want you to update the PR to put the new config options into the natural order. You can do this for e.g. bcm2711_defconfig by:

$ make ARCH=arm64 bcm2711_defconfig
$ make ARCH=arm64 savedefconfig
$ cp defconfig arch/arm64/configs/bcm2711_defconfig

Once you've done that for both defconfig files you can either push the changes as a followup commit which I can then squash while merging, or squash/amend it at your end, git push -f to update your PR then I can just merge it.

Either way, add a comment here when you're done.

[pelwell]

The updated commit looks correct with respect to the file order, but it has lost three modules:

-CONFIG_VSOCKETS_DIAG=m
-CONFIG_VSOCKETS_LOOPBACK=m
-CONFIG_VIRTIO_VSOCKETS_COMMON=m

Is that intentional?

[smcavoy]

That was not intentional. I am just looking into that now. will update in just a few.

[smcavoy]

with the unsorted modules enabled in the defconfig the .config is configured with the correct modules enabled (specifically the 3 mentioned). When savedefconfig is run the modules are not enabled in the defconfig file.
Any thoughts?

[pelwell]

It's fine - those options are implied by the others (if you look in the .config file you'll find they are still present).

[pelwell]

(I should have spotted that sooner)

[smcavoy]

I created another PR for 5.15.y

Thanks for the help