From: "Michael S. Tsirkin" <mst@redhat.com>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: lprosek@redhat.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH v2] virtio-pci: call pci reset variant when guest clears status.
Date: Thu, 28 Jan 2016 13:26:03 +0200 [thread overview]
Message-ID: <20160128132428-mutt-send-email-mst@redhat.com> (raw)
In-Reply-To: <1453973605.30975.6.camel@redhat.com>
On Thu, Jan 28, 2016 at 10:33:25AM +0100, Gerd Hoffmann wrote:
> > > if (vdev->status == 0) {
> > > - virtio_reset(vdev);
> > > - msix_unuse_all_vectors(&proxy->pci_dev);
> > > + virtio_pci_reset(DEVICE(proxy));
> > > }
> > >
> > > /* Linux before 2.6.34 drives the device without enabling
> >
> > Aren't there two call sites in virtio_ioport_write?
>
> /me was specifically fixing clear-status code paths mentioned in the
> commit message.
>
> Yes, there is another one, not fully sure what is supposed to happen
> there.
>
> cheers,
> Gerd
Same thing really - virtio 0 has two equivalent ways to
reset a device: write 0 into status or write 0 into PFN
register.
--
MST
prev parent reply other threads:[~2016-01-28 11:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-27 14:09 [Qemu-devel] [PATCH v2] virtio-pci: call pci reset variant when guest clears status Gerd Hoffmann
2016-01-27 15:50 ` Michael S. Tsirkin
2016-01-28 9:33 ` Gerd Hoffmann
2016-01-28 11:26 ` Michael S. Tsirkin [this message]
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