Re: [Qemu-stable] [Qemu-devel] [PATCH] vl: Delay initialization of memory backends

[Eduardo Habkost]

On Fri, Sep 02, 2016 at 04:56:49PM +0200, Paolo Bonzini wrote:
> On 02/09/2016 16:04, Eduardo Habkost wrote:
[...]
> > Now, why exactly vhost-user-test needs accel=tcg and can't use
> > accel=qtest?
> 
> Because it uses iPXE to exercise the NIC.

Is it used to actually exercise the NIC, or just to initialize
it?

Original commit says "pc-bios/pxe-virtio.rom is used to
instantiate a virtio pcicontroller". I don't see any test code
that receives any data from iPXE: nothing is read from log_fd,
the VHOST_USER_SET_VRING_KICK/VHOST_USER_SET_VRING_CALL FDs are
simply ignored. The only memory writes/reads are on the first
memory page.

I suggest simply using libqos. If somebody really wants rx/tx
tests using vhost-user, they can be written using libqos (just
like virtio-net-test.c).

-- 
Eduardo