From: marex@denx.de (Marek Vasut)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: disable interrupt before spinning endlessly
Date: Fri, 13 Jul 2012 19:32:34 +0200 [thread overview]
Message-ID: <201207131932.34530.marex@denx.de> (raw)
In-Reply-To: <1341824988-18615-1-git-send-email-shawn.guo@linaro.org>
Dear Shawn Guo,
> The CPU will endlessly spin at the end of machine_halt and
> machine_restart calls. However, this will lead to a soft lockup
> warning after about 20 seconds, if CONFIG_LOCKUP_DETECTOR is enabled,
> as system timer is still alive.
>
> Disable interrupt before going to spin endlessly, so that the lockup
> warning will never be seen.
>
> Reported-by: Marek Vasut <marex@denx.de>
> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
> ---
> arch/arm/kernel/process.c | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
I just got back from a conference, I'd gladly test. But my mx28 doesn't boot at
all with latest -next. Any idea why?
Best regards,
Marek Vasut
next prev parent reply other threads:[~2012-07-13 17:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-09 9:09 [PATCH] ARM: disable interrupt before spinning endlessly Shawn Guo
2012-07-13 7:44 ` Shawn Guo
2012-07-13 17:32 ` Marek Vasut [this message]
2012-07-29 21:22 ` Russell King - ARM Linux
2012-07-30 0:30 ` Shawn Guo
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