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Message-ID: <alpine.DEB.2.01.1001060434330.3483@bogon.housecafe.de>
Date: Wed, 6 Jan 2010 04:43:04 -0800 (PST)
From: Christian Kujau <lists@...dbynature.de>
To: Cyrill Gorcunov <gorcunov@...il.com>
cc: Jeremy Fitzhardinge <jeremy@...p.org>,
LKML <linux-kernel@...r.kernel.org>, brgerst@...il.com,
hpa@...or.com
Subject: Re: 2.6.33-rc2: Xen/Guest switching to user mode with no user page
tables
On Wed, 6 Jan 2010 at 14:21, Cyrill Gorcunov wrote:
> > ------------[ cut here ]------------
> > WARNING: at /mnt/d1/linux-2.6-git/arch/x86/kernel/apic/apic_noop.c:130
> > noop_apic_write+0x40/0x50()
> > Modules linked in:Pid: 0, comm: swapper Not tainted 2.6.32 #1
> > Call Trace:
> > [<ffffffff81032563>] ? warn_slowpath_common+0x73/0xb0
> > [<ffffffff8101a7c0>] ? noop_apic_write+0x40/0x50
> > [<ffffffff81334160>] ? init_hw_perf_events+0x33d/0x3dd
> > [<ffffffff8100622f>] ? xen_restore_fl_direct_end+0x0/0x1
> > [<ffffffff81333cab>] ? identify_boot_cpu+0x15/0x3e
> > [<ffffffff81333dfe>] ? check_bugs+0x9/0x2e
> > [<ffffffff8132ec6e>] ? start_kernel+0x324/0x334
> > ---[ end trace a7919e7f17c0a725 ]---
> >
> This one should be fixed by the commit 125580380f418000b1a06d9a54700f1191b6e561
> I believe.
Thanks, so within this particular bisection that would mean it's a "good"
revision - it won't but because it doesn't have this fix, but it's not the
same the initial problem.
I've run a few more bisections and this is where I have arrived now:
http://nerdbynature.de/bits/2.6.33-rc2/xen/bisect/git-bisect_finished.log
...with the last iteration being:
# git bisect good
3bd95dfb182969dc6d2a317c150e0df7107608d3 is the first bad commit
commit 3bd95dfb182969dc6d2a317c150e0df7107608d3
Author: Brian Gerst <brgerst@...il.com>
Date: Wed Dec 9 12:34:40 2009 -0500
x86, 64-bit: Move kernel_thread to C
Prepare for merging with 32-bit.
Signed-off-by: Brian Gerst <brgerst@...il.com>
LKML-Reference: <1260380084-3707-2-git-send-email-brgerst@...il.com>
Signed-off-by: H. Peter Anvin <hpa@...or.com>
:040000 040000 30b5dd4d6888694ca2967893ef3e662461fe9978
0bb5fb33914aac10aaf0344fb8cff596378be52a M arch
@Brian, hpa: I've Cc'ed you on this one, here's what I'm whining about:
http://lkml.org/lkml/2010/1/5/489
Please let me know if this makes sense or if the bisection looks
funny/invalid.
Thanks,
Christian.
--
BOFH excuse #353:
Second-system effect.
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