Re: [PATCH net] lib: packing: fix shift wrapping in bit_reverse()

[Vladimir Oltean <olteanv@gmail.com>]

On Sat, Dec 10, 2022 at 12:06:51AM +0200, Vladimir Oltean wrote:
> On Sat, Dec 10, 2022 at 12:01:28AM +0300, Uladzislau Koshchanka wrote:
> > Hi Vladimir,
> > 
> > > The problem I see with bitrev8 is that the byte_rev_table[] can
> > > seemingly be built as a module (the BITREVERSE Kconfig knob is tristate,
> > > and btw your patch doesn't make PACKING select BITREVERSE). But PACKING
> > > is bool. IIRC, I got comments during review that it's not worth making
> > > packing a module, but I may remember wrong.
> > 
> > Do you really think it's a problem? I personally would just select
> > BITREVERSE with/without making PACKING tristate. BITREVERSE is already
> > selected by CRC32 which defaults to y, so just adding a select isn't a
> > change in the default. Can't think of a practical point in avoiding
> > linking against 256 bytes here.
> > 
> > In any case, it just doesn't look right to have multiple bit-reverse
> > implementations only because of Kconfig relations.
> 
> Ok, let's use BITREVERSE then. Could you submit your patch formally please?

Also, none of that 'while at it, do XYZ unrelated stuff'. One patch per
logical change please.