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bhyve: rework BAR emulation
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Authored by c.koehne_beckhoff.com on Jan 22 2021, 9:23 AM.

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bhyve
Summary

If the guest writes ~0U to one register of a 64 bit BAR (to read it's size), bhyve registers a BAR with an invalid address. This patch avoids this behaviour.

Additionally, this BAR emulation is required for GVT-d (see D26209) and for GPU Passthrough of AMD graphic cards (see D27456).

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R10 FreeBSD src repository
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