Re: [PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-11 Thread Michael Ellerman
On Wed, 2014-12-10 at 17:50 -0600, Scott Wood wrote: > On Wed, 2014-12-10 at 13:14 +1100, Michael Ellerman wrote: > > On Tue, 2014-12-09 at 18:14 -0600, Scott Wood wrote: > > > What benefit is there to ignoring "scripture" here? Going from an easy > > > to use command line option to needing to mes

Re: [PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-10 Thread Scott Wood
On Wed, 2014-12-10 at 13:14 +1100, Michael Ellerman wrote: > On Tue, 2014-12-09 at 18:14 -0600, Scott Wood wrote: > > What benefit is there to ignoring "scripture" here? Going from an easy > > to use command line option to needing to mess around with the dts file > > is not a usability improvement

Re: [PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-09 Thread Michael Ellerman
On Tue, 2014-12-09 at 18:14 -0600, Scott Wood wrote: > On Wed, 2014-12-10 at 10:56 +1100, Michael Ellerman wrote: > > On Tue, 2014-12-09 at 15:04 -0600, Scott Wood wrote: > > > On Tue, 2014-12-09 at 15:11 +1100, Michael Ellerman wrote: > > > > On Fri, 2014-12-05 at 12:52 -0600, Scott Wood wrote: >

Re: [PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-09 Thread Scott Wood
On Wed, 2014-12-10 at 10:56 +1100, Michael Ellerman wrote: > On Tue, 2014-12-09 at 15:04 -0600, Scott Wood wrote: > > On Tue, 2014-12-09 at 15:11 +1100, Michael Ellerman wrote: > > > On Fri, 2014-12-05 at 12:52 -0600, Scott Wood wrote: > > > > On Fri, 2014-12-05 at 16:14 +0100, Greg Kurz wrote: > >

Re: [PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-09 Thread Michael Ellerman
On Tue, 2014-12-09 at 15:04 -0600, Scott Wood wrote: > On Tue, 2014-12-09 at 15:11 +1100, Michael Ellerman wrote: > > On Fri, 2014-12-05 at 12:52 -0600, Scott Wood wrote: > > > On Fri, 2014-12-05 at 16:14 +0100, Greg Kurz wrote: > > > > The smt-enabled kernel parameter basically leaves unwanted cpu

Re: [PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-09 Thread Scott Wood
On Tue, 2014-12-09 at 15:11 +1100, Michael Ellerman wrote: > On Fri, 2014-12-05 at 12:52 -0600, Scott Wood wrote: > > On Fri, 2014-12-05 at 16:14 +0100, Greg Kurz wrote: > > > The smt-enabled kernel parameter basically leaves unwanted cpus executing > > > in firmware or wherever they happen to be.

Re: [PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-09 Thread Greg Kurz
On Tue, 09 Dec 2014 15:11:02 +1100 Michael Ellerman wrote: > On Fri, 2014-12-05 at 12:52 -0600, Scott Wood wrote: > > On Fri, 2014-12-05 at 16:14 +0100, Greg Kurz wrote: > > > The smt-enabled kernel parameter basically leaves unwanted cpus executing > > > in firmware or wherever they happen to be

Re: [PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-08 Thread Michael Ellerman
On Fri, 2014-12-05 at 12:52 -0600, Scott Wood wrote: > On Fri, 2014-12-05 at 16:14 +0100, Greg Kurz wrote: > > The smt-enabled kernel parameter basically leaves unwanted cpus executing > > in firmware or wherever they happen to be. The very same applies to the > > ibm,smt-enabled DT property which

Re: [PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-08 Thread Scott Wood
On Mon, 2014-12-08 at 09:23 +0100, Greg Kurz wrote: > On Fri, 5 Dec 2014 12:52:45 -0600 > Scott Wood wrote: > > > On Fri, 2014-12-05 at 16:14 +0100, Greg Kurz wrote: > > > The smt-enabled kernel parameter basically leaves unwanted cpus executing > > > in firmware or wherever they happen to be. Th

Re: [PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-08 Thread Greg Kurz
On Fri, 5 Dec 2014 12:52:45 -0600 Scott Wood wrote: > On Fri, 2014-12-05 at 16:14 +0100, Greg Kurz wrote: > > The smt-enabled kernel parameter basically leaves unwanted cpus executing > > in firmware or wherever they happen to be. The very same applies to the > > ibm,smt-enabled DT property which

Re: [PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-05 Thread Scott Wood
On Fri, 2014-12-05 at 16:14 +0100, Greg Kurz wrote: > The smt-enabled kernel parameter basically leaves unwanted cpus executing > in firmware or wherever they happen to be. The very same applies to the > ibm,smt-enabled DT property which is no more used by anything known. These > are hacks that sho

[PATCH 2 1/4] powerpc: drop the ability to tweak SMT mode at boot time

2014-12-05 Thread Greg Kurz
The smt-enabled kernel parameter basically leaves unwanted cpus executing in firmware or wherever they happen to be. The very same applies to the ibm,smt-enabled DT property which is no more used by anything known. These are hacks that shoudn't be used in a production environment. Quoting mpe, "th