On Wed, Jul 25, 2018 at 06:46:59PM +0800, Hongbo Zhang wrote: > On 25 July 2018 at 17:54, Andrew Jones <drjo...@redhat.com> wrote: > > On Wed, Jul 25, 2018 at 01:30:52PM +0800, Hongbo Zhang wrote: > >> For the Aarch64, there is one machine 'virt', it is primarily meant to > >> run on KVM and execute virtualization workloads, but we need an > >> environment as faithful as possible to physical hardware, for supporting > >> firmware and OS development for pysical Aarch64 machines. > >> > >> This patch introduces new machine type 'Enterprise' with main features: > >> - Based on 'virt' machine type. > >> - Re-designed memory map. > >> - EL2 and EL3 are enabled by default. > >> - GIC version 3 by default. > >> - AHCI controller attached to system bus, and then CDROM and hard disc > >> can be added to it. > >> - EHCI controller attached to system bus, with USB mouse and key board > >> installed by default. > >> - E1000E ethernet card on PCIE bus. > >> - VGA display adaptor on PCIE bus. > >> - Default CPU type cortex-a57, 4 cores, and 1G bytes memory. > >> - No virtio functions enabled, since this is to emulate real hardware. > > > > In the last review it was pointed out that using virtio-pci should still > > be "real" enough, so there's not much reason to avoid it. Well, unless > > there's some concern as to what drivers are available in the firmware and > > guest kernel. But that concern usually only applies to legacy firmwares > > and kernels, and therefore shouldn't apply to AArch64. > > > For Armv7, there is one typical platform 'vexpress', but for Armv8, no
Wasn't the vexpress model designed for a specific machine? Namely for Arm's simulator? Is the vexpress model really something typical among all the Armv7 platforms? > such typical one, the 'virt' is typically for running workloads, one > example is using it under OpenStack. > So a 'typical' one for Armv8 is needed for firmware and OS > development, similar like 'vexpress' for Armv7. What is a "typical" Armv8 machine? What will a typical Armv8 machine be in two years? Note, I'm not actually opposed to the current definition (because I don't really have one myself). I'm just opposed to hard coding one. Thanks, drew
