Re: [PATCH v5 00/20] target/arm: Implement FEAT_RME

[Peter Maydell]

On Tue, 20 Jun 2023 at 13:46, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> Changes for v5:
>   * Enabled only by cpu property x-rme=on, not -cpu max.
>   * Rebase vs SecEL2 fixes, now in master.
>
> This doesn't have the magic RMM memory, which previous patch sets
> included for booting Huawei's forked TF-A.  Upstream TF-A does not
> have sufficient code to build either PLAT={qemu,qemu_sbsa} with
> the RMM enabled, so that can't be tested either at the moment.
>
> All I can say is that this doesn't appear to break anything else
> with x-rme=on.  Which is less than satisfying.

I'm going to apply this to target-arm.next, since it's all
reviewed. I've added this to the patch 20 commit message:

# We're not currently completely sure whether FEAT_RME will
# be OK to enable purely as a CPU-level property, or if it will
# need board co-operation, so we're making these experimental
# x- properties, so that the people developing the system
# level software for RME can try to start using this and let
# us know how it goes. The command line syntax for enabling
# this will change in future, without backwards-compatibility.

If you can send an extra patch that does the documentation
changes that would be great; I figured we didn't need to
hold this up or apply only 1-19 and not 20 just for the
docs update.

thanks
-- PMM