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    SubjectRe: [PATCH] SCSI driver for VMware's virtual HBA.

    > Nobody said you had to have the exact same driver for every hypervisor.
    > What people are suggesting is that we look at commonalities in the
    > interfaces both from a control plane point of view (transport class) and
    > from a code sharing point of view (libscsivirt). However, all the
    > hypervisor interfaces I've seen are basically DMA rings ...

    I don't think that's anything special about hypervisors though -- pretty
    much all modern device interfaces are basically DMA rings, aren't they?
    I'm definitely in favor of common code to handle commonality but on the
    other hand I don't see what's so special about virtual devices vs. real
    HW devices. One the one side we have VMware's closed hypervisor code
    and on the other side we have vendor XYZ's closed RTL and firmware code.

    - R.

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