From bc2cf84cc7b29349b6f7effdb955b83afaf298f7 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Mon, 28 Oct 2019 12:11:00 -0400 Subject: pci: strengthen requirement of the correct subsystem id If a hardware implementation of virtio does not have the correct subsystem id, then drivers can't report ir properly, or detect and work around bugs. Change the requirement from MAY to SHOULD. We can't make it a MUST since we did not require this historically. Fixes: https://github.com/oasis-tcs/virtio-spec/issues/61 Signed-off-by: Michael S. Tsirkin --- content.tex | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/content.tex b/content.tex index 06bb4ca..535a3f4 100644 --- a/content.tex +++ b/content.tex @@ -562,7 +562,7 @@ Transitional PCI Device ID & Virtio Device \\ For example, the network card device with the Virtio Device ID 1 has the PCI Device ID 0x1041 or the Transitional PCI Device ID 0x1000. -The PCI Subsystem Vendor ID and the PCI Subsystem Device ID MAY reflect +The PCI Subsystem Vendor ID and the PCI Subsystem Device ID SHOULD reflect the PCI Vendor and Device ID of the environment (for informational purposes by the driver). Non-transitional devices SHOULD have a PCI Device ID in the range -- cgit