On Wed, May 13, 2020 at 10:10:03AM +0000, David Laight wrote: > From: Geert Uytterhoeven > > Sent: 13 May 2020 10:49 > ... > > > I don't want to apply this to older kernels as it could cause extra > > > memory usage for no good reason. I have no idea why a non ARC system > > > would want it :( > > > > I think the reference to ARC is a red herring. > > The real issue is that buffers used for DMA may not have the required > > alignment, which is not limited to ARC systems. > > > > Note that I'm also not super happy with the extra memory usage. > > But devm_*() conveniences come with their penalties... > > Interesting thought. > Could the devm 'header' be put right at the end of the kmalloc() > buffer? https://lkml.kernel.org/r/20191220140655.GN2827@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
