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From: Peter Chubb <peter@chubb.wattle.id.au>
To: linux-ia64@vger.kernel.org
Subject: [Linux-ia64] Preempt problems
Date: Mon, 03 Feb 2003 20:17:01 +0000	[thread overview]
Message-ID: <marc-linux-ia64-105590709805801@msgid-missing> (raw)

Hi David,
   Just a heads up --- there are still two major problems with the
patch I submitted for preemption support, so I suggest you don't merge
it yet (although I'd very much appreciate having it reviewed and
tested by third parties).

The two problems I see are:
    -- perfmon missing interrupts *even with CONFIG_PREEMPT turned
off!*
   -- weird kernel page faults apparently during ia64_leave_kernel()
(from the stack backtrace), but with an IP address in region 0, after
some variable amount of uptime, apparently independent of anything
happening on the machine (at least, I haven't yet been able to isolate
anything that causes it).

--
Dr Peter Chubb				    peterc@gelato.unsw.edu.au
You are lost in a maze of BitKeeper repositories, all almost the same.


             reply	other threads:[~2003-02-03 20:17 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-02-03 20:17 Peter Chubb [this message]
2003-02-03 21:36 ` [Linux-ia64] Preempt problems Stephane Eranian
2003-02-03 22:33 ` Peter Chubb
2003-02-03 23:43 ` David Mosberger
2003-02-05 17:03 ` Joel GUILLET
2003-02-14 20:05 ` Ray Bryant
2003-02-14 20:11 ` Stephane Eranian
2003-02-14 21:04 ` Ray Bryant

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