netdev - Re: [GIT PULL] vhost: fixes, vdpa

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Message-ID: <CAHk-=wg7sMywb2V8gifhpUDE=DWQTvg1wDieKVc0UoOSsOrynw@mail.gmail.com>
Date:   Sat, 11 Apr 2020 09:38:05 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     KVM list <kvm@...r.kernel.org>,
        virtualization@...ts.linux-foundation.org,
        Netdev <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Alexander Duyck <alexander.h.duyck@...ux.intel.com>,
        David Hildenbrand <david@...hat.com>, eperezma@...hat.com,
        "Cc: stable@...r.kernel.org, david@...hat.com, dverkamp@...omium.org,
        hch@....de, jasowang@...hat.com, liang.z.li@...el.com, mst@...hat.com,
        tiny.windzz@...il.com," <jasowang@...hat.com>,
        lingshan.zhu@...el.com, Michal Hocko <mhocko@...nel.org>,
        Nadav Amit <namit@...are.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        David Rientjes <rientjes@...gle.com>, tiwei.bie@...el.com,
        tysand@...gle.com,
        "Cc: stable@...r.kernel.org, david@...hat.com, dverkamp@...omium.org,
        hch@....de, jasowang@...hat.com, liang.z.li@...el.com, mst@...hat.com,
        tiny.windzz@...il.com," <wei.w.wang@...el.com>,
        xiao.w.wang@...el.com, yuri.benditovich@...nix.com
Subject: Re: [GIT PULL] vhost: fixes, vdpa

On Mon, Apr 6, 2020 at 2:11 PM Michael S. Tsirkin <mst@...hat.com> wrote:
>
> The new vdpa subsystem with two first drivers.

So this one is really annoying to configure.

First it asks for vDPA driver for virtio devices (VIRTIO_VDPA) support.

If you say 'n', it then asks *again* for VDPA drivers (VDPA_MENU).

And then when you say 'n' to *that* it asks you for Vhost driver for
vDPA-based backend (VHOST_VDPA).

This kind of crazy needs to stop.

Doing kernel configuration is not supposed to be like some truly
horrendously boring Colossal Cave Adventure game where you have to
search for a way out of maze of twisty little passages, all alike.

                Linus