On Fri, Dec 17, 2021 at 10:54 AM Giulio Benetti <giulio.benetti@xxxxxxxxxxxxxxxxxxxxxx> wrote: > On 16/12/21 22:13, Arnd Bergmann wrote: > > > Vladimir has put some work into making Cortex-R work in the kernel, and > > he may have some other thoughts on this question. > > I'm curious if he has something specific to Cortex-R to tell. > > I've found that Cortex-R82 has a MMU: > https://www.arm.com/products/silicon-ip-cpu/cortex-r/cortex-r82 > but I can't find any SoC that uses it. Also, I don't know how many > people could use it honestly. R82 is fairly new, but I expect that we will see support in Linux in the future. Aside from having an MMU, it also 64-bit-only, so we'd treat it like a normal ARMv8-A core in arch/arm64. Arnd
