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The kernel currently exposes the SR-IOV capability as read-only through vfio-pci. This is sufficient to protect the host kernel, but has the potential to confuse guests without further virtualization. In particular, OVMF tries to size the VF BARs and comes up with absurd results, ending with an assert. There's not much point in adding virtualization to a read-only capability, so we simply hide it for now. If the kernel ever enables SR-IOV virtualization, we should easily be able to test it through VF BAR sizing or explicit flags. Testing whether we should parse extended capabilities is also pulled into the function to keep these assumptions in one place. Tested-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
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| .. | ||
| amd-xgbe.c | ||
| calxeda-xgmac.c | ||
| common.c | ||
| Makefile.objs | ||
| pci-quirks.c | ||
| pci.c | ||
| pci.h | ||
| platform.c | ||
| trace-events | ||