https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207447
Bug ID: 207447
Summary: Add hw.pci.honor_msi_blacklist=0 to GCE images
Product: Base System
Version: 10.3-BETA2
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: misc
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
CC: [email protected]
Due to the way Google Compute Engine currently populates the virtual PCI bus it
presents to VMs, sys/dev/pci/pci.c's pci_msi_blacklisted() blocks use of MSI.
Since there is no 0:0:0 bridge device the existing workarounds there, such as
the one for qemu, won't work.
Adding hw.pci.honor_msi_blacklist=0 to /boot/loader.conf on the images intended
for Google Compute Engine will allow use of MSI, which is supported by the
platform.
Efforts are underway to make this unnecessary, but are unlikely to be complete
before 10.3-RELEASE.
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