Re: WAS: linux-rt fails to boot on > 3.12.5.-rt7 ... NOW IS: linux-rt-3.14 boots by reverting patches + nvidia uses __rt_mutex_init [which in 3.14 has been changed to EXPORT_SYMBOL_GPL]

[Paul Gortmaker <paul.gortmaker@windriver.com>]

[Re: WAS: linux-rt fails to boot on > 3.12.5.-rt7 ... NOW IS: linux-rt-3.14 boots by reverting patches + nvidia uses __rt_mutex_init [which in 3.14 has been changed to EXPORT_SYMBOL_GPL]] On 14/05/2014 (Wed 03:38) Kimmo Taskinen wrote:

> On 25.04.2014 20:39, Paul Gortmaker wrote:
> >On 14-04-25 01:23 PM, jordan wrote:
> >>On Fri, Apr 25, 2014 at 10:43 AM, Paul Gortmaker
> >><paul.gortmaker@windriver.com> wrote:
> >>>On 14-04-19 10:42 AM, jordan wrote:
> >>>>Hey Paul,
> >>>>
> >>>>>I've got some AMD kit that has just been freed up from winter
> >>>>>heating duty - sometime later this week I should be able to try to
> >>>>>reproduce what you have seen, and knowing it works w/o the above
> >>>>>softirq patch monkeying around should be a good lead on this.
> >>>>That would be awesome! IIRC, Sebastian said that he didn't have said
> >>>>h/w CPU kicking around to test with, at some point in my original
> >>>>thread on this subject... and i just don't have the skill set required
> >>>So I stuck the -rt patches onto 3.14.1 last night;  made a defconfig
> >>>and then enabled RT_FULL in the resulting .config and that booted
> >>>right up on a 1090T six core phenom, which kind of surprised me.
> >>that surprises me too - maybe 3.14.1 fixed something? ...anyway, I am
> >>only home for a short while [lunch] but i will try building 3.14.1-rt
> >>when i get home and see what happens / report back.
> >I had to drop one ipv6 patch that was now in stable, but otherwise
> >it was straight forward to make a 3.14.1-rt
> >
> >P.
> >--
> >
> >>>I should be able to dig up an athlon quad and see what it does...
> >>worth a look, i suppose.
> >>
> >>thanks Paul for the update
> >>
> >>Jordan Johnston
> I had not been able to boot my Phenom II X4 910e PC with any of the
> latest RT kernels (3.12 after 3.12.5-rt7 or 3.14 or not even the
> latest 3.10 versions) until I today disabled AMD C1E from BIOS. An
> other way to get it to boot was "acpi=off" as a parameter to kernel
> but I need "button". I tried many others "processor.max_cstate=0",
> "processor.nocst", etc...
> 
> Without RT patch the "AMD C1E" is not a problem.

OK, so I never got back to finding a system that could reproduce this,
but it sounds like it is still worthwhile; thanks for the reminder and
I'll go see if I can reproduce this on a quad since the six core was OK.

P.
--

> 
> Cheers
> Kimmo
> 
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