On 13 October 2017 at 13:51, Laszlo Ersek <lersek@redhat.com> wrote:
Another idea is to move *the* system DRAM base to a different guest-phys address. (Likely using a different version of the "virt" machine type, or even a different machine type entirely.) This would not be compatible with current ArmVirtQemu, which hard-codes the system DRAM base in several, quite brittle / sensitive, locations. (More on this later -- that's going to be the larger part of my email anyway.) In order to handle the new base in ArmVirtQemu, two approaches are possible: change the hard-coded address(es), or cope with the address dynamically.
I strongly don't want to move the DRAM base in the "virt" board. This is one of the few fixed things we've said that guest code can rely on without having to fish the information out of the device tree. thanks -- PMM