public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: Nishanth Aravamudan <nacc@us.ibm.com>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: "mingo@elte.hu" <mingo@elte.hu>,
	"linux-ia64@vger.kernel.org" <linux-ia64@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [BISECTION RESULT] sched: revert cpu_clock to pre-27ec4407790d075c325e1f4da0a19c56953cce23 state
Date: Mon, 4 Aug 2008 15:45:33 -0700	[thread overview]
Message-ID: <20080804224533.GC30096@us.ibm.com> (raw)
In-Reply-To: <57C9024A16AD2D4C97DC78E552063EA308329110@orsmsx505.amr.corp.intel.com>

On 04.08.2008 [15:00:47 -0700], Luck, Tony wrote:
> > I'd bet resonable sums of money that we are (once again) accessing
> > per-cpu variables in code before ia64 has a chance to initialize
> > things so that they can actually work. :-(
> 
> I tried this simple hack to check ... per-cpu variables are
> not usable until cpu_init() sets up the "ar.k3" register on
> ia64.  So this hack checks to see if it is set before calling
> cpu_clock():

Would you like me to test this patch on the box, to verify? It seems
like you were able to reproduce the non-booting kernel?

Thanks,
Nish

-- 
Nishanth Aravamudan <nacc@us.ibm.com>
IBM Linux Technology Center

  parent reply	other threads:[~2008-08-04 22:46 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-04 19:46 [BISECTION RESULT] sched: revert cpu_clock to pre-27ec4407790d075c325e1f4da0a19c56953cce23 state Nishanth Aravamudan
2008-08-04 20:37 ` Luck, Tony
2008-08-04 22:00   ` Luck, Tony
2008-08-04 22:02     ` David Miller
2008-08-04 22:10       ` Luck, Tony
2008-08-04 22:14         ` David Miller
2008-08-04 22:22           ` Luck, Tony
2008-08-04 22:41             ` Luck, Tony
2008-08-04 22:45     ` Nishanth Aravamudan [this message]
2008-08-04 22:53       ` Luck, Tony
2008-08-04 23:30         ` Nishanth Aravamudan
2008-08-05  8:56 ` Peter Zijlstra
2008-08-05 14:59   ` Luck, Tony
2008-08-05 17:34   ` Nishanth Aravamudan
2008-08-13  0:37 ` Luck, Tony
2008-08-13 16:25   ` Ingo Molnar
2008-08-13 19:29     ` Nishanth Aravamudan
2008-08-13 20:11       ` Luck, Tony
2008-08-19 22:19         ` Nishanth Aravamudan
2008-08-19 22:34           ` Luck, Tony

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20080804224533.GC30096@us.ibm.com \
    --to=nacc@us.ibm.com \
    --cc=linux-ia64@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@elte.hu \
    --cc=tony.luck@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox