feat: arch packages with dkms kvm modules and patched qemu

packaging/vfio-native-kvm-dkms/vfio-native-kvm-dkms.install

@@ -0,0 +1,24 @@
+post_install() {
+    cat <<'MSG'
+
+  vfio-native-kvm-dkms: DKMS builds the patched kvm, kvm-amd and kvm-intel
+  for every installed 7.2.x kernel with headers, into updates/, which modprobe
+  prefers over the in-tree modules. They are NOT loaded yet.
+
+  With every VM shut down:
+
+      sudo modprobe -r kvm_amd kvm && sudo modprobe kvm_amd     # or kvm_intel
+
+  Confirm BOTH took - checking one passes on a stale build of the other:
+
+      cat /sys/module/kvm/srcversion /sys/module/kvm_amd/srcversion
+      modinfo -F srcversion kvm kvm_amd
+
+  THE PIN: these are 7.2.3's KVM sources. DKMS refuses to build them for a
+  kernel outside 7.2.x, the stock modules load silently, and three detections
+  come back. A pacman hook warns when that happens.
+
+MSG
+}
+post_upgrade() { post_install; }
+post_remove() { echo "  Stock KVM loads on the next boot, or reload the modules now."; }