That is good info. I recommend to add microvm feature to the https://github.com/tianocore/edk2/blob/master/Maintainers.txt
OvmfPkg: microvm-related modules F: OvmfPkg/microvm/ F: OvmfPkg/Include/IndustryStandard/Microvm.h I also recommend you to be reviewer for the feature. Feel free to add other people as reviewer too, if you think he/she can help review the patch set. Thank you Yao Jiewen > -----Original Message----- > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Gerd > Hoffmann > Sent: Wednesday, September 1, 2021 3:25 PM > To: Yao, Jiewen <jiewen....@intel.com> > Cc: devel@edk2.groups.io; Marc-André Lureau > <marcandre.lur...@redhat.com>; Anthony Perard > <anthony.per...@citrix.com>; Ard Biesheuvel <ardb+tianoc...@kernel.org>; > Justen, Jordan L <jordan.l.jus...@intel.com>; Julien Grall <jul...@xen.org>; > Stefan Berger <stef...@linux.ibm.com> > Subject: Re: [edk2-devel] [PATCH 00/17] [RFC] OvmfPkg: Add support for > microvm machine type > > On Tue, Aug 31, 2021 at 02:32:45PM +0000, Yao, Jiewen wrote: > > Thank you. That confirms my guess. > > > > If you can add all those info in readme, that would be great, especially > > the URL > https://qemu.readthedocs.io/en/latest/system/i386/microvm.html, as well as > the scope. > > Current README below (also covering the not-yet submitted > virtio-mmio and pcie patches). > > take care, > Gerd > > -------------------- cut here ----------------------- > > This is an *experimental* port of OVMF for the qemu microvm > machine type. > > microvm background info > ----------------------- > > microvm is designed for modern, virtio-based workloads. Most legacy > lpc/isa devices like pit and pic can be turned off. virtio-mmio > (i.e. '-device virtio-{blk,net,scsi,...}-device') is used for > storage/network/etc. > > Optional pcie support is available and any pcie device supported by > qemu can be plugged in (including virtio-pci if you prefer that over > virtio-mmio). > > https://qemu.readthedocs.io/en/latest/system/i386/microvm.html > https://www.kraxel.org/blog/2020/10/qemu-microvm-acpi/ > > design issues > ------------- > > Not fully clear yet how to do hardware detection best. Right now > using device tree to find virtio-mmio devices and pcie host bridge, > can reuse existing ArmVirtPkg code that way. Needs patched qemu. > > features > -------- > [working] serial console > [working] direct kernel boot > [in progress] virtio-mmio support > [in progress] pcie support > > known limitations > ----------------- > * rtc=on is required for now. > * can't use separate code/vars (actually an microvm limitation, > there is no pflash support). > * transitional virtio-pci devices do not work. microvm doesn't > support ioports on pcie, and ovmf doesn't initialize pcie devices > with ioports if there is no address space for them (even though > pcie devices are required to be functional without ioports). > > known bugs > ---------- > * timer has wrong frequency (running fast on my hardware). > > usage > ----- > qemu-system-x86_64 \ > -nographic \ > -machine microvm,acpi=on,pit=off,pic=off,rtc=on \ > -bios /path/to/MICROVM.fd \ > [ ... more args here ... ] > > > > > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#80193): https://edk2.groups.io/g/devel/message/80193 Mute This Topic: https://groups.io/mt/85272548/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
