On Tue, Oct 5, 2021, at 17:54, Xueming Li wrote:
> Global devargs syntax is used as device iteration filter like
> "class=vdpa", a devargs without bus args is valid from parsing
> perspective.
>
> This patch makes bus args optional.
>
> Fixes: d2a66ad79480 ("bus: add device arguments name parsing")
> Cc: sta...@dpdk.orgI agree with the change, but I'm not sure it should go into stable. The question goes further than that: is there a spec describing the valid syntax to users, that would allow to say the current parsing is buggy? I haven't found it in the doc. If there is a change such as this one, it should also be notified in the release notes. This is user-facing. So, not saying you should do it and not part of this patch, but a doc might help in doc/guides/howto maybe. The general grammar of a devargs could be formally described (in BNF?). Each layers should document their supported keys as well. Not sure it would be better gathered in a single file or within each driver. Now that the global syntax has been enabled for users, it should be documented. > > Signed-off-by: Xueming Li <xuemi...@nvidia.com> For this patch and beside the stable considerations, Reviewed-by: Gaetan Rivet <gr...@u256.net> -- Gaetan Rivet
