[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] virtio-blk io bar size changed
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] virtio-blk io bar size changed |
Date: |
Mon, 11 Feb 2019 22:21:10 -0500 |
On Tue, Feb 12, 2019 at 01:59:38AM +0000, Liu, Changpeng wrote:
>
>
> > -----Original Message-----
> > From: Michael S. Tsirkin [mailto:address@hidden
> > Sent: Tuesday, February 12, 2019 1:23 AM
> > To: Dr. David Alan Gilbert <address@hidden>
> > Cc: address@hidden; Liu, Changpeng <address@hidden>;
> > address@hidden; address@hidden
> > Subject: Re: virtio-blk io bar size changed
> >
> > On Mon, Feb 11, 2019 at 04:58:19PM +0000, Dr. David Alan Gilbert wrote:
> > > Hi,
> > > Lukáš reported that there's a migration breakage between 3.1 and
> > > current head with virtio-blk; it looks like the io bar changes from 64
> > > to 128 bytes and my bisect suggests it's:
> > >
> > > commit caa1ee43131c060347b32893abd41fe4865eaa2e (HEAD, refs/bisect/bad)
> > > Author: Changpeng Liu <address@hidden>
> > > Date: Wed Jan 16 13:19:30 2019 +0800
> > >
> > > vhost-user-blk: add discard/write zeroes features support
> > >
> > >
> > > How do we fix that?
> > >
> > > Dave
> >
> > Quickly :)
> >
> > See the logic around virtio_net_set_config_size
> > and static VirtIOFeature feature_sizes - we need to
> > add something similar to virtio blk now.
> Correct, after this commit the BAR config size is changed, I will submit a
> patch to fix this.
Thanks!
> >
> >
> > > --
> > > Dr. David Alan Gilbert / address@hidden / Manchester, UK