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From: Sukrit Bhatnagar <skrtbhtngr@gmail.com>
To: "Dr. David Alan Gilbert" <dgilbert@redhat.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [GSoC] Help needed in implementing live migration
Date: Thu, 27 Jun 2019 05:02:33 +0530	[thread overview]
Message-ID: <CAMzgYoOjCNYvadBT0PPorG0wOX3Ymvd5x_1NzW1SH2te1JfN-Q@mail.gmail.com> (raw)
In-Reply-To: <20190624184133.GW2726@work-vm>

On Tue, 25 Jun 2019 at 00:11, Dr. David Alan Gilbert
<dgilbert@redhat.com> wrote:
>
> * Sukrit Bhatnagar (skrtbhtngr@gmail.com) wrote:
> > Hi David,
> >
> > I am Sukrit, GSoC participant working on PVRDMA live migration.
> > We had a short chat about vmxnet3 migration about a week ago
> > on the IRC channel.
> >
> > I am facing an issue while doing migration of the pvrdma device.
> > While loading the device state, we need to perform a few dma
> > mappings on the destination. But on the destination, the migration
> > fails due a BounceBuffer being locked (in_use). This global
> > BounceBuffer is used in address_space_map/unmap functions
> > which the rdma_pci_dma_map/unmap calls.
> > Essentially, we need a way to remap guest physical address on
> > the destination after migration.
> >
> > I had posted an RFC a while ago on the list:
> > https://lists.gnu.org/archive/html/qemu-devel/2019-06/msg04924.html
> > https://lists.gnu.org/archive/html/qemu-devel/2019-06/msg04923.html
> >
> > My mentors (Marcel and Yuval) told me to ask you for help
> > regarding this. It would be really great if you can guide me in
> > finding a workaround for this.
>
> Hi,
>   I'll have a look; I need to get some other things finished first.

Adding cc: qemu-devel, sorry for the private email.

> Dave
> > Thanks,
> > Sukrit
> --
> Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK


       reply	other threads:[~2019-06-26 23:34 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CAMzgYoMG1ic-5yiS2ehnDLna+UKgCtMBcSVNmKQx1oxRZqT=yQ@mail.gmail.com>
     [not found] ` <20190624184133.GW2726@work-vm>
2019-06-26 23:32   ` Sukrit Bhatnagar [this message]
2019-06-28  9:38     ` [Qemu-devel] [GSoC] Help needed in implementing live migration Stefan Hajnoczi
2019-06-28 11:18       ` Dr. David Alan Gilbert

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