Avi Kivity wrote:
Christian Bornträger wrote:
To summarize, Anthony thinks it should use virtio, while I believe
virtio is useful for exporting guest memory, not for importing host
memory.
I think the current virtio interface is not ideal for importing host
memory, but we can change that. If you look at the dcssblk driver for
s390, it allows a guest to map shared memory segments via a diagnose
(hypercall). This driver uses PCI regions to map memory.
My point is, that the method to map memory is completely irrelevant,
we just need something like mmap/shmget between the guest and the
host. We could define an interface in virtio, that can be used by any
transport. In case of pci this could be a simple pci map operation.
What do you think about something like: (CCed Rusty)
Exactly.
Agreed.
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