conf: add kvm-host.conf configuration fragmentHEADmaster

Building kvm-image-minimal fails without the 'kvm' DISTRO_FEATURE,
requiring users to manually add it to local.conf. Every other
virtualization platform (Xen, Docker, Podman, k3s, containerd) already
has a composable configuration fragment in conf/distro/include/ that
can be included with a single require line.

Add kvm-host.conf following the same pattern as xen-host.conf: a pure
delta fragment that appends the kvm DISTRO_FEATURE. Composable with
any container profile and the base meta-virt-host.conf.

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/docs/build-profiles.md b/docs/build-profiles.md
index 7a82855f..40f6655c 100644
--- a/docs/build-profiles.md
+++ b/docs/build-profiles.md
@@ -19,6 +19,7 @@ meta-virt-host.conf              <- base (always required first)
   container-host-k3s-node.conf
   container-host-incus.conf
   xen-host.conf                  <- Xen support (composable)
+  kvm-host.conf                  <- KVM/libvirt support (composable)
 meta-virt-dev.conf               <- QEMU dev settings (opt-in)
 container-registry.conf          <- registry config (opt-in)
 
@@ -159,6 +160,15 @@ Xen hypervisor support. Composable with any container profile.
 
 **Use with:** `bitbake xen-image-minimal`
 
+### kvm-host.conf
+
+KVM/libvirt support. Composable with any container profile.
+
+**Sets:**
+- `DISTRO_FEATURES:append = " kvm"`
+
+**Use with:** `bitbake kvm-image-minimal`
+
 ### meta-virt-dev.conf
 
 QEMU development and testing settings. Only include when developing