From: Helge Deller <deller@gmx.de>
To: linux-parisc <linux-parisc@vger.kernel.org>,
Domenico Andreoli <cavokz@gmail.com>
Cc: Dave Land <xmechanic@landcomp.net>,
John David Anglin <dave.anglin@bell.net>
Subject: HP J5600/J6750 64bit SMP CPU#1 stuck problems [was: Does there exists any 32bit-only PARISC SMP machines?]
Date: Mon, 21 Oct 2013 22:07:37 +0200 [thread overview]
Message-ID: <52658989.5090508@gmx.de> (raw)
In-Reply-To: <20130904142847.GA2893@glitch>
Domenico,
On 09/04/2013 04:28 PM, Domenico Andreoli wrote:
>>>> J5600 is SMP capable in both 32bit and 64bit mode.
>>>> mine doesn't boot 64bit SMP since 2.6.22. I've never been able to trace
>>>> it down but can confirm it happens also on more recent kernels.
>>
>> I confirm that smp parisc64 v3.11 doesn't bring up both the cpus on my
>> system but at least it boots one, something that didn't happen in some
>> darker moments since 2.6.22.
>>
>> similar "SMP: CPU:1 is stuck." happens also with debian v3.10-parisc64-smp kernel.
>
> BTW, this is the most detailed investigation I'm aware of:
> https://lkml.org/lkml/2008/4/20/251
Dave Anglin had the idea that the 64bit SMP CPU#1 stuck problems might be
related to PDC- or I/O-space conflicts with physical memory.
On Dave Land's machine (J6750) we could verify that off-list.
I assume you have more than 3GB (4GB) RAM in your machine?
If yes, then if you phyiscally remove some memory so that you leave a max.
of 3GB in, the 64bit SMP kernel will most likely boot up all CPUs.
You wrote:
> mine doesn't boot 64bit SMP since 2.6.22.
Are you *really* sure that it booted 64bit SMP with kernel 2.6.22 ?
Or did you maybe upgraded memory after that date?
If it sucessfully booted, then we maybe have only some kind of regression.
Helge
next prev parent reply other threads:[~2013-10-21 20:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-29 18:51 Does there exists any 32bit-only PARISC SMP machines? Helge Deller
2013-08-30 2:42 ` James Bottomley
2013-09-03 15:56 ` Domenico Andreoli
2013-09-04 8:13 ` Aw: " Helge Deller
2013-09-04 14:07 ` Domenico Andreoli
2013-09-04 14:28 ` Domenico Andreoli
2013-09-04 15:41 ` John David Anglin
2013-09-05 16:24 ` John David Anglin
2013-10-21 20:07 ` Helge Deller [this message]
2013-10-21 20:37 ` HP J5600/J6750 64bit SMP CPU#1 stuck problems [was: Does there exists any 32bit-only PARISC SMP machines?] John David Anglin
2013-10-21 20:39 ` Helge Deller
2013-10-26 22:06 ` Helge Deller
2013-10-29 13:31 ` Domenico Andreoli
2013-09-04 8:44 ` Does there exists any 32bit-only PARISC SMP machines? Thomas Bogendoerfer
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