Re: 1:1 mapping

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On 11/17/2009 01:39 AM, Marty Kurtz wrote:
Hi all

I work in the embedded world and am evaluating potential hypervisors
and kvm looks suitable for what we want
However, I see some old references to 1:1 mapping which would allow a
guest to see a PCI device even without an IOMMU

Is this currently incorporated into the qemu-0.11 and kvm-88 release?


No.

Is dma=none equivalent to this by any chance or is it only meant for
devices that do not use DMA?

If 1:1 mapping is not in the tree, is there a reasonable chance that
the old patch would work with the latest?

The interest in 1:1 has waned as more hardware now has an iommu, and because 1:1 can only support one guest, and insecurely at that. The patches may work, but are unlikely to make it upsteam now.

--
error compiling committee.c: too many arguments to function

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