fix cmb-p2p #25
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fix cmb-p2p #25
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iommufd does not support mapping hardware BARs. This is a problem in scenarios where we want to P2P between devices. Add an environment variable (VFN_IOMMU_FORCE_VFIO) that forces use of the vfio backend, even when iommufd is supported. Signed-off-by: Klaus Jensen <[email protected]>
The cmb-p2p example is broken. Fix it. After mapping the BAR into virtual memory, map it in the iommu as well and use the resulting IOVA as the CMB Controller Base Address. Fixes: 4de6927 ("add cmb-p2p example") Signed-off-by: Klaus Jensen <[email protected]>
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