On Mon, Feb 03, 2003 at 09:57:02AM +0100, Nemanja Popov wrote:
> Does Lexra's CPU LX4280 has MMU. I've found from dateaheet LX4280 that
> there is only SMMU (S stands for Simple) which does not include TLB and
> exceptions related to that.
> I've noticed port for lexra (among others also for LX4280) on cvs. Is it
> possible to run linux on that kind of processor, and if so will it manage
> user space application as it should with mmu.
TLB-less processors aren't supported at all by Linux 2.4. Linux 2.5 has
the infrastructure in place to support TLB-less processors but we don't
support that on MIPS. I guess it's probably not interesting because
TLB-less CPUs tend to be part of systems that are too resource constrained
to be of interest for use with Linux but I certainly wouldn't refuse such
The CVS kernel does not support Lexra processors. There are a bit over one
year old Lexra patches for 2.4. Me and the author agreed to not merge those
patches into the CVS kernel because Lexra is a dead company.