From: Nathan Lynch <ntl@pobox.com>
To: Mohan Kumar M <mohan@in.ibm.com>
Cc: ppcdev <linuxppc-dev@ozlabs.org>,
Paul Mackerras <paulus@samba.org>,
fastboot@lists.osdl.org
Subject: Re: [PATCH] Fix interrupt distribution in ppc970
Date: Tue, 6 Mar 2007 16:05:46 -0600 [thread overview]
Message-ID: <20070306220546.GI24926@localdomain> (raw)
In-Reply-To: <20070306135754.GB7476@in.ibm.com>
Mohan Kumar M wrote:
> Hi,
>
> Here comes the revised version of patch to fix the interrupt missing
> problem when a kdump kernel is booted with "maxcpus=1" kernel parameter.
>
> In the xics initialization code a check is made to detemine whether
> maxcpus kernel parameter is present and if its present then
> default_distrib_server variable is initialized to the current boot cpu
> id (by default_server variable). So that when ever a kernel is booted
> with maxcpus kernel parameter all interrupts are routed to the boot cpu
> only.
>
> Tested on POWER5 and JS20 systems.
>
> Any comment?
Was the root cause of this problem ever determined? It sure looked
like a firmware or hardware problem since it's known to occur only on
JS20.
next prev parent reply other threads:[~2007-03-06 22:21 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-08 4:55 [PATCH] Fix interrupt distribution in ppc970 Mohan Kumar M
2006-12-18 4:37 ` Paul Mackerras
2006-12-18 5:14 ` Mohan Kumar M
2006-12-18 10:57 ` Mohan Kumar M
2007-01-02 11:42 ` [Fastboot] " Mohan Kumar M
2007-01-02 15:07 ` Doug Maxey
2007-03-06 13:57 ` Mohan Kumar M
2007-03-06 14:16 ` Michael Ellerman
2007-03-06 16:55 ` Mohan Kumar M
2007-03-06 17:37 ` Michael Ellerman
2007-03-07 4:53 ` Mohan Kumar M
2007-03-07 10:52 ` Michael Ellerman
2007-04-09 8:57 ` Mohan Kumar M
2007-04-10 7:06 ` Michael Ellerman
2007-04-10 12:54 ` Mohan Kumar M
2007-04-10 16:59 ` Milton Miller
2007-04-11 1:16 ` Michael Ellerman
2007-04-19 11:52 ` Mohan Kumar M
2007-04-20 5:45 ` Milton Miller
2007-04-26 9:24 ` Mohan Kumar M
2007-04-26 14:42 ` Milton Miller
2007-05-03 14:47 ` Mohan Kumar M
2007-05-06 6:52 ` Milton Miller
2007-06-04 10:54 ` Mohan Kumar M
2007-06-06 9:43 ` Milton Miller
2007-06-06 11:31 ` Mohan Kumar M
2007-06-11 1:58 ` Milton Miller
2007-06-11 18:07 ` Mohan Kumar M
2007-06-12 14:51 ` Mohan Kumar M
2007-06-15 16:35 ` Milton Miller
2007-03-07 6:06 ` [Fastboot] " Vivek Goyal
2007-03-07 10:46 ` Michael Ellerman
2007-03-06 22:05 ` Nathan Lynch [this message]
2007-03-07 5:01 ` Mohan Kumar M
2007-03-07 8:52 ` Benjamin Herrenschmidt
2007-03-07 9:10 ` Mohan Kumar M
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