On Thu, May 22, 2025 at 11:12:22PM +0300, Michael Tokarev wrote:
> On 16.05.2025 16:53, Maciej S. Szmigiero wrote:
> > From: "Maciej S. Szmigiero" <maciej.szmigi...@oracle.com>
> >
> > If zerocopy is enabled for multifd then QIO_CHANNEL_WRITE_FLAG_ZERO_COPY
> > flag is forced into all multifd channel write calls via p->write_flags
> > that was setup in multifd_nocomp_send_setup().
> >
> > However, device state packets aren't compatible with zerocopy - the data
> > buffer isn't getting kept pinned until multifd channel flush.
> >
> > Make sure to mask that QIO_CHANNEL_WRITE_FLAG_ZERO_COPY flag in a multifd
> > send thread if the data being sent is device state.
> >
> > Fixes: 0525b91a0b99 ("migration/multifd: Device state transfer support -
> > send side")
> > Signed-off-by: Maciej S. Szmigiero <maciej.szmigi...@oracle.com>
>
> Is this qemu-stable material (for 10.0)?
>
> I'm picking it up for 10.0 branch, please let me know if I shouldn't.
Yes please, for two migration patches in the lastest pull. I forgot to add
Cc: for stable. I'll try to remember again, thanks.
--
Peter Xu
