Re: [PATCH 1/5] target/arm: Disable FEAT_TRF in neoverse-v1

[Peter Maydell]

On Thu, 10 Aug 2023 at 03:36, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> Self-hosted trace is out of scope for QEMU.

True, but we already disable this in arm_cpu_realizefn()
along with FEAT_SPE, FEAT_AMU and a bunch of other "out
of scope" or not-yet-implemented features. I thought
it more reliable to do the disabling globally rather
than rely on everybody adding a new CPU to remember
to adjust the ID register values. (Plus if we ever do
implement some approximation to one of these features
we only need to change one place in the code, not
re-look-up all the CPU ID register values.) See
commit 7d8c283e10dd81.

thanks
-- PMM