Cornelia Huck
2021-Oct-04 07:01 UTC
[RFC PATCH 1/1] virtio: write back features before verify
On Sat, Oct 02 2021, "Michael S. Tsirkin" <mst at redhat.com> wrote:> On Fri, Oct 01, 2021 at 05:18:46PM +0200, Cornelia Huck wrote: >> I'd say we need a hack here so that we assume little-endian config space >> if VERSION_1 has been offered; if your patch here works, I assume QEMU >> does what we expect (assmuming little-endian as well.) I'm mostly >> wondering what happens if you use a different VMM; can we expect it to >> work similar to QEMU? > > Hard to say of course ... hopefully other VMMs are actually > implementing the spec. E.g. IIUC rust vmm is modern only.Yes, I kind of hope they are simply doing LE config space accesses. Are there any other VMMs that are actually supported on s390x (or other BE architectures)?
Halil Pasic
2021-Oct-04 09:25 UTC
[RFC PATCH 1/1] virtio: write back features before verify
On Mon, 04 Oct 2021 09:01:42 +0200 Cornelia Huck <cohuck at redhat.com> wrote:> On Sat, Oct 02 2021, "Michael S. Tsirkin" <mst at redhat.com> wrote: > > > On Fri, Oct 01, 2021 at 05:18:46PM +0200, Cornelia Huck wrote: > >> I'd say we need a hack here so that we assume little-endian config space > >> if VERSION_1 has been offered; if your patch here works, I assume QEMU > >> does what we expect (assmuming little-endian as well.) I'm mostly > >> wondering what happens if you use a different VMM; can we expect it to > >> work similar to QEMU? > > > > Hard to say of course ... hopefully other VMMs are actually > > implementing the spec. E.g. IIUC rust vmm is modern only. > > Yes, I kind of hope they are simply doing LE config space accesses. > > Are there any other VMMs that are actually supported on s390x (or other > BE architectures)? >I think zCX (z/OS Container Extensions) is relevant as it uses virtio. That is all I know about. Regards, Halil