From: Alexey.Brodkin@synopsys.com (Alexey Brodkin)
To: linux-snps-arc@lists.infradead.org
Subject: [PATCH] arc: Re-enable MMU upon die()
Date: Fri, 1 Sep 2017 11:48:09 +0000 [thread overview]
Message-ID: <1504266488.15144.3.camel@synopsys.com> (raw)
In-Reply-To: <d2b588da61b35312a3126b605685f22bc30fc3ae.1504265945.git.joabreu@synopsys.com>
Hi Jose,
On Fri, 2017-09-01@12:39 +0100, Jose Abreu wrote:
> I recently came upon a scenario where I would get a double fault
> after a machine check error. It turns out that for Ksymbol lookup
> to work with modules we need to have MMU enabled because module
> address is mapped in the cached space.
>
> This patch re-enables the MMU before start printing the stacktrace
> making stacktracing of modules work upon a fatal exception.
I'm wondering how do we end up with MMU disabled?
next prev parent reply other threads:[~2017-09-01 11:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-01 11:39 [PATCH] arc: Re-enable MMU upon die() Jose Abreu
2017-09-01 11:48 ` Alexey Brodkin [this message]
2017-09-01 12:33 ` Jose Abreu
2017-09-01 12:42 ` Alexey Brodkin
2017-09-01 15:30 ` Vineet Gupta
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