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    SubjectRe: [PATCH] virtio-balloon spec: provide a version of the "silent deflate" feature that works
    Il 10/09/2012 03:43, Rusty Russell ha scritto:
    >> Now that vfio is upstream and work on qemu integration
    >> is being worked on, we might finally see people using this bit
    >> to allow memory overcommit with device assignment.
    > That was left-field.... so you're saying some guest might pull a page
    > from the balloon and DMA to it, and the vfio device needs to know in
    > advance that it's going to do it?

    Not the vfio device, but the page needs to be pinned with mlock so the
    effect is the same.

    > But what will we do if the guest doesn't ack the bit?

    Just pin the whole memory.


    > ie. I don't think it can really be optional.

     \ /
      Last update: 2012-09-10 09:01    [W:0.022 / U:66.748 seconds]
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