Messages in this thread | | | From | Segher Boessenkool <> | Subject | Re: [PATCH 11/13] cell: split out board specific files | Date | Tue, 2 May 2006 01:09:53 +0200 |
| |
> Segher, a problem with your suggestion is that our > makefiles don't have as rich a set of logical ops as the > config files. Its easy to express 'build A if B', but not > so easy to do 'build A if not C'. To make this work > cleanly I made PPC_CELL denote !SOME_HYPERVISOR_THING, > so I can have constructions like this in the makefile:
Not just that, but we can have a kernel image supporting both the "raw" hardware _and_ stuff with a hypervisor underneath.
All CONFIG_<whatever> should always be used as a positive, never a negative. My bad :-)
So it really should be
depends on PPC_CELL_NATIVE
or similar. Having PPC_CELL mean "native" / "raw" is not the way to go, there will be many many hypervisors in the future, it would be nice to have PPC_CELL mean just that, "support for the Cell architecture" in general, kernels running on various hypervisors will see the hardware virtualised to varying degrees.
Segher
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |