Re: [PULL 03/18] target/arm: Store FPSR cumulative exception bits in env->vfp.fpsr

[Peter Maydell <peter.maydell@linaro.org>]

On Thu, 31 Oct 2024 at 17:31, Michael Tokarev <mjt@tls.msk.ru> wrote:
> What I see is that the whole thing - plus one more commit right
> before the mentioned refactoring, ea8618382aba, "target/arm: Correct
> comments about M-profile FPSCR" - applies cleanly to 9.0 and 8.2.
> For 7.2 though, this is definitely too much because there, tcg code
> has different rules for the temps, - in particular, it frees all
> temps explicitly, so new code wont fit there anyway, resulting in
> leaks and requiring major re-review.
>
> Being niche, I'd not bother with that even in 8.2, but the fact
> this refactoring applies nicely.. :)
>
> It's probably the first time when the difference between many
> changes but tested in master, vs smaller possible change, is quite
> significant.  I prefer for it to just work ;))
>
> 8.2 is in ubuntu noble (LTS), so it might be with us a bit longer
> than some other series, but in ubuntu they build with KVM support,
> so the bug isn't there.

Note that the bug is not in "TCG + KVM" or "TCG only"
configs, but specifically "KVM without TCG" (i.e
you configured with '--disable-tcg' on an aarch64 host).

-- PMM