> > ---------------------------------------------------------------------- > > On Wed, Dec 13, 2023 at 04:27:40PM +0000, Srujana Challa wrote: > > > Hi Michael, > > > > > > While verifying virtio frontend drivers of guest OS on qemu with > > > vhost-vdpa backend, we came across feature bits VIRTIO_F_IN_ORDER > > > and VIRTIO_F_NOTIFICATION_DATA, which are introduced in virtio 1.1 > > > spec, are not yet enabled in qemu. These feature flags are very much > > > useful for achieving better virtio-net performance and most of the > > > latest > > hardware VDPA devices supports these feature flags as per of virtio spec. > > > > Could you share more about which device do you mean? Does Marvell ship > > or intends to ship one? > > > We are planning to ship virtio compliant devices (Marvell CN103/106 DPUs). > > > > Could you let us know if there are any plans, to add support for > > > these features in upcoming qemu releases. > > > I guess there was some discussion on VIRTIO_F_IN_ORDER feature bit > > > long ago, > > > https://urldefense.proofpoint.com/v2/url?u=https- > > 3A__patchew.org_QEMU_ > > > 1533833677-2D27512-2D1-2Dgit-2Dsend-2Demail-2Di.maximets- > > 40samsung.com > > > > > > _&d=DwIBAg&c=nKjWec2b6R0mOyPaz7xtfQ&r=Fj4OoD5hcKFpANhTWdwQzj > > T1Jpf7veC5 > > > 263T47JVpnc&m=f_dkNKw4UhQulkhjHzd- > > 2YuAvT5n_l_7yuu2r6wSNY2cRHCHnkEM1w2m > > > > BEX6Y_yv&s=E3PwNom0AdGnh6dp0WsFPANXX5qH3gAcUYucDyZ6_7Q&e= > > > Seems like that discussion has not reached any conclusion or further > work. > > > > > > Thanks, > > > Srujana. > > > > Yes that patch got comments and these were not addressed. > > Feel free to address them so this can proceed. > > > We are planning to address the concerns discussed in that mail chain. Can we make the "vhost-internal" backend with its own set of supported features? In this case we'll be able to use "host_features" as a set of features available for negotiation and every backend (including "internal" one) will negotiate features that it supports, as asked in the above patch thread?
> > -- > > MST
