From: Jens Taprogge <jens.taprogge@taprogge.org>
To: John Stultz <john.stultz@linaro.org>
Cc: Kay Sievers <kay@vrfy.org>, Feng Tang <feng.tang@intel.com>,
Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
ThomasGleixner <tglx@linutronix.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, gcc@gcc.gnu.org
Subject: Re: [Regression] d96ac6f2: time: Revert ALWAYS_USE_PERSISTENT_CLOCK compile time optimizaitons
Date: Thu, 13 Jun 2013 20:51:00 -0000 [thread overview]
Message-ID: <20130613205119.GA1332@weetamoe.luzern.taprogge.wh> (raw)
In-Reply-To: <51ACDB76.8000808@linaro.org>
On Mon, Jun 03, 2013 at 11:07:50AM -0700, John Stultz wrote:
> On 06/01/2013 11:45 AM, Jens Taprogge wrote:
> >On Sat, Jun 01, 2013 at 05:37:05PM +0200, Jens Taprogge wrote:
> >>On Fri, May 31, 2013 at 05:16:49PM -0700, John Stultz wrote:
> >>>On 05/31/2013 04:42 PM, Jens Taprogge wrote:
> >>>>On Fri, May 31, 2013 at 02:14:47PM -0700, John Stultz wrote:
> >>>>>
> >>>>>Ok. None of this is yet making any sense to me. (And I worry
> >>>>>enumerating all the mix and match of configs that work or don't only
> >>>>>blurs the issues).
> >>>>>
> >>>>>Few base questions:
> >>>>>1) What distro is this on?
> >>>>arch linux
> >>>>
> >>>>>2) What gcc version are you using?
> >>>>gcc (GCC) 4.8.0 20130502 (prerelease)
> >>>(Sorry, I'm not very familiar with arch) Are you able to also
> >>>install a 4.7 gcc in parallel to try to build with?
> >>>
> >>>If so, you might want to try that. Your results are just weird
> >>>enough I want to just be sure we're not chasing compiler caused
> >>>ghosts.
> >>I will compile gcc4.6 and see if using that makes any difference.
> >I have compiled two of the broken configurations with gcc-4.6 and both
> >boot up. I am not sure how to proceed from here.
>
> Ok. That at least helps make me feel better that I'm not just crazy.
>
> First thing, I'd probably file a bug against the Arch gcc 4.8
> package, just in case there's any out-of-tree changes there.
>
> I've also added the gcc mailing list to the thread to see if someone
> there can help narrow down what might be going wrong.
Hello John, sorry for the delay. I was able to do some more testing.
At first it seemed that things were working with gcc 4.8.1 (arch
upgraded). However when I switched to Linux 3.9.5 I hit the same
problems again. The config options are different. Some configs that
worked with 3.9.4 broke, some that did not work boot now.
I have seen boot failure with kernels compiled using gcc 4.6 as well.
I will have to check which configuration that was.
Since the arch package is unpatched I suspect, this is not an arch
issue: https://projects.archlinux.org/svntogit/packages.git/tree/trunk?h=packages/gcc
I find it quite strange that I was unable to find reports of problems
similar to mine on the web. Perhaps it is a firmware issue?! I have
don't know much about the UEFI boot process. Perhaps the firmware
expects some address to be alignment in a certain way?
Best Regards,
Jens
prev parent reply other threads:[~2013-06-13 20:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20130526192535.GA30367@weetamoe.luzern.taprogge.wh>
[not found] ` <51A50AB7.8000804@linaro.org>
[not found] ` <20130529204119.GA3976@weetamoe.luzern.taprogge.wh>
[not found] ` <51A6A682.40303@linaro.org>
[not found] ` <20130531010200.GA1385@weetamoe.luzern.taprogge.wh>
[not found] ` <20130531120615.GA1442@weetamoe.luzern.taprogge.wh>
[not found] ` <51A912C7.8090500@linaro.org>
[not found] ` <20130531234242.GA1235@weetamoe.luzern.taprogge.wh>
[not found] ` <51A93D71.30804@linaro.org>
[not found] ` <20130601153705.GA1233@weetamoe.luzern.taprogge.wh>
[not found] ` <20130601184519.GA2349@weetamoe.luzern.taprogge.wh>
2013-06-03 18:08 ` John Stultz
2013-06-13 20:51 ` Jens Taprogge [this message]
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