[PATCH v6 0/3] Updated Cortex-M3 series

Hi Uwe,

On Fri, Aug 03, 2012 at 10:50:35PM +0800, Uwe Kleine-K?nig wrote:

On Fri, Aug 03, 2012 at 02:07:08PM +0000, Arnd Bergmann wrote:

quoted

Is it possible to build a NOMMU kernel that runs on both
ARMv7-A amd ARMv7-M, in other words is ARMv7-M compatible with
ARMv7-A (or ARMv7-R for that matter) if you don't use the MMU?

the instructions to enable and disable irqs are different, so
we'd need another indirection at least there. Also the whole
exception model is different. So I'd say it's too different to
target for a common kernel for the A, R and M profiles.

We are using standard Linux kernel (v3.3) with MMU disabled on
a Cortex R4 system.

--
regards
Shiraz