Re: New pmap status update

[Jason Thorpe <thorpej%me.com@localhost>]

> On Dec 14, 2025, at 9:25 AM, Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost> wrote:
> 
> I've tried SMALL020 kernel (i.e. traditional pmap) around 20251207
> (via netboot) and unfortunately it gets panic() due to another
> TAS instruction in _kernel_lock() (maybe __cpu_simple_lock_try()?):

Yes, looks like it’s __cpu_simple_lock() and/or __cpu_simple_lock_try().  I’ll add a __HAVE_M68K_BROKEN_RMC check in <m68k/lock.h> and make it use _atomic_cas_32() in that case.

-- thorpej