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Subject: Re: [PATCH 1/4] powerpc/tm: Add commandline option to disable
 hardware transactional memory
From: Michael Neuling <mikey@neuling.org>
To: David Laight <David.Laight@ACULAB.COM>, 'Breno Leitao'
 <leitao@debian.org>,  Michael Ellerman <mpe@ellerman.id.au>
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On Fri, 2017-10-20 at 12:58 +0000, David Laight wrote:
> > > This patch adds a simple commandline option so that HTM can be
> > > disabled at boot time.
>=20
> ISTM that being able to disable it after boot would be more useful.
> (ie in a startup script)

I agree bug unfortunately that's impossible.

If a process is already running in tm suspend, there is no way to stop it o=
ther
than killing the process.  At that point you may as well kexec with a new
cmdline option

Mikey