OSX-KVM - March 2021 - Batch Update 1

Changes:

- Upgrade to OpenCore 0.6.7-RELEASE

- Big Sur image building script updates (Nick)
  - See https://github.com/kholia/OSX-KVM/pull/169 for details.

- Removed history to reduce repository size

run-diagnostics.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+
+# run-diagnostics.sh: checks common virtualization programs, modules and
+# options. Written by Foxlet <foxlet@furcode.co>. Modified by Dhiru for OSX-KVM
+# project.
+#
+# Note: This script is borrowed from https://github.com/foxlet/macOS-Simple-KVM
+# project.
+
+echo "== Distro Info ==" >&2
+lsb_release -a 2>/dev/null
+
+echo -e "\n== Loaded Modules ==" >&2
+lsmod | grep kvm
+lsmod | grep amd_iommu
+lsmod | grep intel_iommu
+v=$(cat /sys/module/kvm/parameters/ignore_msrs)
+if [ "$v" != "Y" ]; then
+	echo -e "\nATTENTION: /sys/module/kvm/parameters/ignore_msrs setting seems to be incorrect!"
+fi
+
+echo -e "\n== Installed Binaries ==" >&2
+if [ -x "$(command -v qemu-system-x86_64)" ]; then
+	qemu-system-x86_64 --version
+else
+	echo -e "qemu is not installed." >&2
+fi
+
+if [ -x "$(command -v virt-manager)" ]; then
+	echo -e "virt-manager version $(virt-manager --version)"
+else
+	echo -e "virt-manager is not installed." >&2
+fi
+
+if [ -x "$(command -v python)" ]; then
+	python --version
+else
+	echo -e "python is not installed." >&2
+fi
+
+echo -e "\n== Networking ==" >&2
+ip link show virbr0 >/dev/null 2>&1
+if [ "$?" != 0 ]; then
+	echo -e "Interface virbr0 doesn't seem to exist. Check your networking configuration." >&2
+else
+	echo -e "Found virbr0. Good."
+fi