On Tue, 13 Nov 2007, Mark Lord wrote:

Thomas Gleixner wrote:

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On Tue, 13 Nov 2007, Mark Lord wrote:

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Andrew Morton wrote:

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On Mon, 12 Nov 2007 22:42:32 -0800 "Natalie Protasevich"
[off-list ref] wrote:

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with CONFIG_NO_HZ and/or CONFIG_HPET_TIMER set kernel 2.6.23

doesn't

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boot (ARM, Timer)
http://bugzilla.kernel.org/show_bug.cgi?id=9229
Kernel: 2.6.23
No response from developers

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The bug report is bogus. ARM has no CONFIG_HPET_TIMER.  

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Note:  that same bug exists/existed on i386 back when NO_HZ was
introduced (2.6.21?).  I still see it from time to time on my Quad core
system (very rare), but not any more on my Duo notebook where it used
to happen about 1 in n boots (n < 10).

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AFAICT no fix was ever released for it.

Hmm, at which point does the boot stop ? 

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Just as it prints out these messages, sometimes one of them,
sometimes both (or all four on the quad core):

kernel: switched to high resolution mode on cpu 1
kernel: switched to high resolution mode on cpu 0 

It's completely dead afterwards ?

     tglx