From: Andi Kleen <ak@suse.de>
To: Michael Ellerman <michael@ellerman.id.au>
Cc: <linux-kernel@vger.kernel.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [RFC/PATCH] Make printk work for really early debugging
Date: 18 May 2006 15:55:34 +0200 [thread overview]
Message-ID: <p73y7wz30a1.fsf@bragg.suse.de> (raw)
In-Reply-To: <20060518091410.CC527679F4@ozlabs.org>
Michael Ellerman <michael@ellerman.id.au> writes:
> Currently printk is no use for early debugging because it refuses to actually
> print anything to the console unless cpu_online(smp_processor_id()) is true.
On x86-64 this is simply solved by setting the boot processor online very early.
-Andi
next prev parent reply other threads:[~2006-05-18 13:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-18 9:14 [RFC/PATCH] Make printk work for really early debugging Michael Ellerman
2006-05-18 9:34 ` Andrew Morton
2006-05-18 9:55 ` Michael Ellerman
2006-05-18 10:07 ` Andrew Morton
2006-05-22 6:40 ` Michael Ellerman
2006-05-18 13:55 ` Andi Kleen [this message]
2006-05-18 15:41 ` Michael Ellerman
2006-05-18 16:00 ` Andi Kleen
2006-05-19 4:15 ` Michael Ellerman
2006-05-22 6:57 ` Michael Ellerman
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