[MODERATED] Re: [PATCH v5 08/11] TAAv5 8

On Mon, Oct 21, 2019 at 03:34:40PM -0500, speck for Josh Poimboeuf wrote:
> On Mon, Oct 21, 2019 at 03:33:38PM -0500, Josh Poimboeuf wrote:
> > On Mon, Oct 21, 2019 at 01:01:39PM -0700, speck for Pawan Gupta wrote:
> > > On Mon, Oct 21, 2019 at 02:54:29PM +0200, speck for Michal Hocko wrote:
> > > > On Thu 17-10-19 17:14:07, speck for Pawan Gupta wrote:
> > > > [...]
> > > > > Let me know if there are any questions.
> > > > 
> > > > is there any list of CPUs that would benefit from tsx=auto compared to
> > > > tsx=on? In other words do we really need both?
> > > 
> > > Below is the list of TAA affected CPUs that will get TSX_CTRL MSR.
> > > 
> > > +----------------------------+------------------+------------+
> > > |            Name            |  Family / model  |  Stepping  |
> > > +============================+==================+============+
> > > | Whiskey Lake (ULT refresh) |      06_8E       |    0xC     |
> > > +----------------------------+------------------+------------+
> > > |    2nd gen Cascade Lake    |      06_55       |    6, 7    |
> > > +----------------------------+------------------+------------+
> > > |       Coffee Lake R        |      06_9E       |    0xD     |
> > > +----------------------------+------------------+------------+
> > > 
> > > tsx=auto on these CPUs will disable TSX.
> > > tsx=on will keep TSX enabled.
> 
> [ Please ignore my previous email, it had a glaring typo ]
> 
> Just to clarify, is this list identical to the list of CPUs which are
> vulnerable to TAA and have MDS_NO=1?

That is correct.

Thanks,
Pawan