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| -rw-r--r-- | content.tex | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/content.tex b/content.tex index b1a293f..20a61d6 100644 --- a/content.tex +++ b/content.tex @@ -1510,16 +1510,17 @@ capability list. Therefore: -Transitional devices should expose the Legacy Interface in I/O +Transitional devices MUST expose the Legacy Interface in I/O space in BAR0. -Transitional drivers should look for the Virtio PCI +Transitional drivers MUST look for the Virtio PCI Capabilities on the capability list. -If these are not present, driver should assume a legacy device. +If these are not present, driver MUST assume a legacy device, +and use it through the legacy interface. -Non-transitional drivers should look for the Virtio PCI +Non-transitional drivers MUST look for the Virtio PCI Capabilities on the capability list. -If these are not present, driver should assume a legacy device, +If these are not present, driver MUST assume a legacy device, and fail gracefully. \paragraph{MSI-X Vector Configuration}\label{sec:Virtio Transport Options / Virtio Over PCI Bus / PCI-specific Initialization And Device Operation / Device Initialization / MSI-X Vector Configuration} |