On 27 May 2015 at 10:30, Paolo Bonzini <pbonz...@redhat.com> wrote: > For example, ARM's "-M virt" uses a pl011 block for the RTC, and also > uses fw_cfg. Another commonly used ISA device is the UART, for which > again -M virt uses a pl031.
Partly we do that because there were a number of reports that trying to use virtio for the console didn't work reliably... Using the stock UART that is widely supported in UEFI/uboot/kernel was a conservative design choice. The next thing that's likely to appear in "virt" is a PL061 GPIO device, which you need for CPU hotplug and external-shutdown-request notifications. -- PMM
