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[PATCH] pci: strengthen requirement of the correct subsystem id
On 28.10.19 17:12, Michael S. Tsirkin wrote:
> 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.
s/ir/it.
Jan
> Change the requirement from MAY to SHOULD.
>
> We can't make it a MUST since we did not require this
> historically.
>
> Signed-off-by: Michael S. Tsirkin <[email protected]>
> ---
>
content.tex | 2 +-
>
1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/content.tex b/content.tex
> index 4bcb728..8f1518c 100644
> --- a/content.tex
> +++ b/content.tex
> @@ -562,7 +562,7 @@ \subsection{PCI Device Discovery}\label{sec:Virtio Transport Options / Virtio Ov
>
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
>
--
Siemens AG, Corporate Technology, CT RDA IOT SES-DE
Corporate Competence Center Embedded Linux
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