[PATCH v3] arc: Re-enable MMU upon a Machine Check exception
Vineet Gupta
Vineet.Gupta1 at synopsys.com
Fri Sep 1 09:55:46 PDT 2017
Hi Jose,
Some very minor nit picks to keep in mind for future patches.
1. all arc patches start with uppercase ARC:
On 09/01/2017 09:05 AM, 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 calling die() so that
> stacktracing of modules work when a machine check exception happens.
>
> Signed-off-by: Jose Abreu <joabreu at synopsys.com>
> Cc: Vineet Gupta <vgupta at synopsys.com>
> Cc: Alexey Brodkin <abrodkin at synopsys.com>
>
> Changes from v2:
> - Rephrased commit title and description
> Changes from v1:
> - Moved MMU re-enable to machine check exception handler
> ---
2. The patch revision history needs to be added *after* the line with ---, that
way git am automatically strips them off when patch is applied.
-Vineet
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