On Fri, Sep 27, 2019 at 04:17:15PM -0400, Doug Ledford wrote: > On Thu, 2019-09-26 at 21:55 +0200, gregkh@xxxxxxxxxxxxxxxxxxx wrote: > > On Thu, Sep 26, 2019 at 07:49:44PM +0000, Saleem, Shiraz wrote: > > > > Subject: Re: [RFC 20/20] RDMA/i40iw: Mark i40iw as deprecated > > > > > > > > On Thu, Sep 26, 2019 at 09:45:19AM -0700, Jeff Kirsher wrote: > > > > > From: Shiraz Saleem <shiraz.saleem@xxxxxxxxx> > > > > > > > > > > Mark i40iw as deprecated/obsolete. > > > > > > > > > > irdma is the replacement driver that supports X722. > > > > > > > > Can you simply delete old one and add MODULE_ALIAS() in new > > > > driver? > > > > > > > > > > Yes, but we thought typically driver has to be deprecated for a few > > > cycles before removing it. > > > > If you completely replace it with something that works the same, why > > keep the old one around at all? > > > > Unless you don't trust your new code? :) > > I have yet to see, in over 20 years of kernel experience, a new driver > replace an old driver and not initially be more buggy and troublesome > than the old driver. It takes time and real world usage for the final > issues to get sorted out. During that time, the fallback is often > necessary for those real world users. How many real users exist in RDMA world who run pure upstream kernel? Thanks > > -- > Doug Ledford <dledford@xxxxxxxxxx> > GPG KeyID: B826A3330E572FDD > Fingerprint = AE6B 1BDA 122B 23B4 265B 1274 B826 A333 0E57 2FDD
