Re: [RESEND PATCH v2] x86/tsx: Set default TSX mode to auto

[Nikolay Borisov]

On 12.11.25 г. 21:13 ч., Dave Hansen wrote:
> On 11/12/25 11:05, Nikolay Borisov wrote:
> > At SUSE we've been releasing our kernels with TSX enabled for the past 6
> > years and some customers have started to rely on it. Furthermore, the last
> > known vulnerability concerning TSX was TAA (CVE-2019-11135) and a
> > significant amount time has passed since then without anyone reporting any
> > issues. Intel has released numerous processors which do not have the
> > TAA vulnerability (Cooper/Ice Lake, Sapphire/Emerald/Granite Rappids)
> > yet TSX remains being disabled by default.
> >
> > The main aim of this patch is to reduce the divergence between SUSE's
> > configuration and the upstream by switching the default TSX mode to
> > auto. I believe this strikes the right balance between keeping it
> > enabled where appropriate (i.e every machine which doesn't contain the
> > TAA vulnerability) and disabling it preventively.
>
> This seems pretty sane to me. TSX is far less scary than it once was. It
> seemed to be a key part of a bunch of the speculation gadgets at some
> point, but having it off by default doesn't really seem to have slowed
> anyone down.
>
> Plus, this won't even change anyone's builds that has a .config from the
> last 5 years.
>
> Does anyone feel differently?

So at the end of the day what is the status of this, will it get merged?