Re: [PATCH 00/22] HWPOISON: Intro (v5)

From: H. Peter Anvin
Date: Tue Jun 16 2009 - 17:06:05 EST


Russ Anderson wrote:
>>
>> However, the more fundamental thing is that it is always trivial to
>> promote an error to a higher severity; the opposite is not true. As
>> such, it becomes an administrator-set policy, which is what it needs to be.
>
> Good point. On ia64 the recovery code is implemented as a kernel
> loadable module. Installing the module turns on the feature.
>
> That is handy for customer demos. Install the module, inject a
> memory error, have an application read the bad data and get killed.
> Repeat a few times. Then uninstall the module, inject a
> memory error, have an application read the bad data and watch
> the system panic.
>
> Then it is the customer's choice to have it on or off.
>

There are a number of ways to set escalation policy. Modules isn't
necessarily the best, but it doesn't really matter what the exact
mechanism is.

-hpa
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