Re: [BUG] New Kernel Bugs

On Tue, 13 Nov 2007, Mark Lord wrote:

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
boot (ARM, Timer)
http://bugzilla.kernel.org/show_bug.cgi?id=9229
Kernel: 2.6.23

No response from developers

..

The bug report is bogus. ARM has no CONFIG_HPET_TIMER. 
 

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).

AFAICT no fix was ever released for it.

Hmm, at which point does the boot stop ? 

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Suspend to RAM resume hangs on a tickless (NO_HZ) kernel
http://bugzilla.kernel.org/show_bug.cgi?id=9275
Kernel: 2.6.23
This is HP notebook nc6320 T2400 945GM

No response from developers

..

I *still* get very slow resume-from-RAM quite often here
(new in 2.6.22 kernel, wasn't there in early 2.6.23-rc*).

Hmm. Which one 22 or 23 ?

Something eventually times out after a minute or so
and it comes back.  Cannot make it happen reliably,
unless I'm in a hurry to get something done.  :)
I suspect USB here, probably the same loopy bug that
we added a "loop limit failsafe" for back in 2.6.21(?).

Do you have a pointer to that please ?

Thanks,

	tglx