16 Mar
2018
16 Mar
'18
4:50 a.m.
Hi,
On Thu, Mar 15, 2018 at 10:56:48AM +0100, Arnd Bergmann wrote:
On Thu, Mar 15, 2018 at 10:42 AM, David Howells dhowells@redhat.com wrote:
Do we have anything left that still implements NOMMU?
Please don't kill !MMU.
Yes, plenty.
I've made an overview of the remaining architectures for my own reference[1]. The remaining NOMMU architectures are:
- arch/arm has ARMv7-M (Cortex-M microcontroller), which is actually
gaining traction
ARMv7-R as well, also seems ARM is coming up with more !MMU's - v8-M, v8-R. In addition, though only of academic interest, ARM MMU capable platform's can run !MMU Linux.
afzal
- arch/sh has an open-source J2 core that was added not that long ago,
it seems to be the only SH compatible core that anyone is working on.
- arch/microblaze supports both MMU/NOMMU modes (most use an MMU)
- arch/m68k supports several NOMMU targets, both the coldfire SoCs and the classic processors
- c6x has no MMU