On 26/05/2015 23:25, Christopher Covington wrote: > On 05/25/2015 08:53 AM, Paolo Bonzini wrote: >> >> On 22/05/2015 13:12, Daniel P. Berrange wrote: >>> In >>> particular I don't see why we need to have a SATA controller and ISA/LPC >>> bridge in every virt machine - root PCI bus only should be possible, as you >>> can provide disks via virtio-blk or virtio-scsi and serial, parallel, mouse, >>> floppy via PCI devices and/or by adding a USB bus in the cases where you >>> really need one. >> >> I think removing the ISA/LPC bridge is hard. It includes the real-time >> clock and fw_cfg, for example. > > Could VirtIO specified replacements make sense for these peripherals?
Not really. virtio is too heavyweight and you'd be reinventing the wheel unnecessarily. 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. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
