Re: [Xen-devel] [PATCH v2] ns16550: Add command line parsing adjustments

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 09.01.17 at 17:34, <ian.jackson@xxxxxxxxxxxxx> wrote:
> Jan Beulich writes ("Re: [PATCH v2] ns16550: Add command line parsing 
> adjustments"):
>> See e.g. the cpufreq=, i.e. we're talking of
>> 
>> com1=<name1>:<value1>,<name2>:<value2>,...
> 
> I think we will have to use `=', so
>   com1=<name1>=<value1>,<name2>=<value2>,...
> 
> Since we already have BDFs which I think contain `:', and that would
> be more confusing than the `nested' equals signs.

Oh, indeed. Otoh these two sub-options then would b prefixed
by <name>= (or <name>:) too, so there would be visual
separation. Another option would be to allow both : and = as
top level separators.

> Also it would be good to support a few positional parameters.  Most
> people would want to write something like
>    com1=115200,8n1,irq=7

Right, I had been thinking of this too, but then wasn't sure to
suggest such a mixture. Perhaps the first two options could
even remain completely nameless then (I think those are the
ones which had been there from the beginning)?

Jan


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