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Subject: Re: [PATCH 02/11] transport-pci: Move transitional device id to legacy section
On Mon, Apr 03, 2023 at 02:58:52PM +0000, Parav Pandit wrote: > > > From: Michael S. Tsirkin <mst@redhat.com> > > Sent: Monday, April 3, 2023 10:50 AM > > > > > No idea what all this means, sorry. Please do not move text that affects modern > > drivers to a legacy section. And we've spilled way too much ink on this already. > > I disagree because spec do not describe modern driver and what you are describing is not aligned the way current spec is written. > I prefer to avoid mentioning it again the same feature bits section that talks about Transitional interface. Sorry I don't understand what you are trying to say here. This is all cosmetics, matter of personal preference. But I did my best to try to explain the reason this is not a cleanup but a breaking change. Was I misunderstood or you just don't agree? No idea. The reason for current placement is this: A conformant implementation MUST be either transitional or non-transitional, see \ref{intro:Legacy Interface: Terminology}. An implementation MAY choose to implement OPTIONAL support for the legacy interface, including support for legacy drivers or devices, by conforming to all of the MUST or REQUIRED level requirements for the legacy interface for the transitional devices and drivers. The requirements for the legacy interface for transitional implementations are located in sections named ``Legacy Interface'' listed below: Binding to a transitional ID is mandatory for modern drivers. *This* is why this ID can not go to legacy section - all of legacy sections are and must stay optional. What is true (and unfortunate) is that legacy sections are not as formal as modern ones - originally we wanted them to be informational only. For example there is no clear separation between driver and device conformance sections. Work on this if you like, that is welcome. But please stop moving mandatory text to legacy sections. -- MSR
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