This seems to be necessary for some types of PCI devices. We had problems when using gPXE in KVM virtual machines with direct PCI device access. Signed-off-by: Bernhard Kohl <bernhard.kohl@nsn.com> Signed-off-by: Shao Miller <shao.miller@yrdsb.edu.on.ca> Modified-by: Marty Connor <mdc@etherboot.org> Signed-off-by: Marty Connor <mdc@etherboot.org>