On Wed, 28 Nov 2018 16:55:30 +0100 Christian Zigotzky <chzigotzky@xxxxxxxxxxx> wrote: > On 28 November 2018 at 12:05PM, Michael Ellerman wrote: > > Nothing specific yet. > > > > I'm a bit worried it might break one of the many old obscure platforms > > we have that aren't well tested. > > > Please don't apply the new DMA mapping code if you don't be sure if it > works on all supported PowerPC machines. Is the new DMA mapping code > really necessary? It's not really nice, to rewrote code if the old code > works perfect. We must not forget, that we work for the end users. Does > the end user have advantages with this new code? Is it faster? The old > code works without any problems. There is another service provided to the users as well: new code that is cleaner and simpler which allows easier bug fixes and new features. Without being familiar with the DMA mapping code I cannot really say if that's the case here. > I am also worried about this code. How > can I test this new DMA mapping code? I suppose if your machine works it works for you. Thanks Michal
