From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Wed, 13 Dec 2006 15:13:57 +0100
From: Jan Kiszka <jan.kiszka@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-help] Xenomai patched SMP kernel and "nosmp" kernel
	parameter
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To: "M. Koehrer" <mathias_koehrer@domain.hid>
Cc: xenomai@xenomai.org

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M. Koehrer wrote:
> Hi everybody,
>=20
> I have a SMP kernel 2.6.17.7 on a Dual Core Pentium 4 running.
> SMP is enabled at the kernel configuration.
> This works fine.
> However, I want to compare UP with SMP operation, that's why
> I want to boot the system with the "nosmp" kernel parameter.
> However, booting of the PC with  nosmp does not work.
> First it starts fine, however when trying to access hdb (which is the C=
D ROM
> drive in my system) to get info about it, the message
> "hdb: lost interrupt"
> appears, and booting is stopped.=20
>=20
> Does the nosmp parameter work with a Xenomai patched kernel?
> Or what could be wrong with it....
>=20
> I am using the latest Xenomai SVN #1948.
> The kernel patch is adeos-ipipe-2.6.17-i386-1.5-02.patch
>=20
> Any ideas on this?

Same for maxcpus=3D0? I'm asking as this configures the system more
aggressively smp-less on x86 (patching spinlock alternatives for UP,
configuring LAPIC mode etc.).

Jan


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