On Fri, Jan 26, 2018 at 7:08 PM, Andy Shevchenko <andy.shevchenko@xxxxxxxxx> wrote: > On Thu, Jan 25, 2018 at 4:36 PM, Juergen Gross <jgross@xxxxxxxx> wrote: >> Add a function to get the address of the RSDP table. Per default use a >> __weak annotated function being a nop. > > The problem with weak functions that we can't have more than one > implementation per kernel while we would like to built several code > paths. > > I have stumbled on the similar stuff and realize that. > > Perhaps, one of the solution is to have an additional struct under > x86_init to alternate ACPI related stuff. I'm not sure if that really is a problem in this particular case. Why would you want to use different RSDP retrieval functions for one arch? Thanks, Rafael