linux-kernel - Re: reboot/kexec in 2.6.38

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Message-ID: <20110412144330.GB20815@atrey.karlin.mff.cuni.cz>
Date:	Tue, 12 Apr 2011 16:43:30 +0200
From:	Cyril Hrubis <metan@....cz>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Eric Miao <eric.y.miao@...il.com>, Pavel Machek <pavel@....cz>,
	rpurdie@...ys.net, lenz@...wisc.edu,
	kernel list <linux-kernel@...r.kernel.org>, arminlitzel@....de,
	thommycheck@...il.com,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	dbaryshkov@...il.com, omegamoon@...il.com, utx@...guin.cz,
	zaurus-devel@....linuxtogo.org,
	Marek Vasut <marek.vasut@...il.com>,
	Kexec Mailing List <kexec@...ts.infradead.org>
Subject: Re: reboot/kexec in 2.6.38

Hi!
> >> I think it's config issue. Never heard of this.
> >
> > I've just compiled and booted 2.6.38. The kernel boots without problems when
> > flashed in. But I've had no success with kexec, the last lines I see are:
> >
> > Starting new kernel
> 
> Enable early_printk to a serial port if you can.
> 
> There is definitely an issue in 2.6.38 where kdump doesn't work, that
> right now looks like a memblock issue.

Finaly got time to solder serial adapter...

And now, after I configured kernel to print to both ttyS0 serial console and
tty0 the kexec started to work.

-- 
metan
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