KVM QEMU Wrapper for enabling TX and RX Queue size on VirtIO devices
CentOS 7.x and RHEL 7.x distributions
Make sure of not overwriting the original qemu-kvm binary file
# Move the original qemu-kvm binary to a different location
mv /usr/libexec/qemu-kvm /usr/libexec/qemu-system-x86_64
# Copy the wrapper at the qemu-kvm original location
cp ./qemu-kvm /usr/libexec/qemu-kvm
# Make it executable
chmod +x /usr/libexec/qemu-kvm
# Copy original SELinux context to the wrapper
semanage fcontext -a -e /usr/libexec/qemu-system-x86_64 /usr/libexec/qemu-kvm
# Apply SELinux context to both wrapper and original qemu-kvm binary
restorecon -vvRF /usr/libexec/qemu-system-x86_64
restorecon -R -v /usr/libexec/qemu-kvm