Re: [PATCH 7/8] ACPI, APEI, CPER: Cleanup CPER memory error outputformat

From: Borislav Petkov
Date: Tue Oct 15 2013 - 08:30:19 EST


On Tue, Oct 15, 2013 at 05:11:59PM +0530, Naveen N. Rao wrote:
> If so, how will disabling dmesg output and switching to a trace event
> help? The user-space program will still break unless they add support
> for that trace event, right?

Well, as yourself this: what happens to a userspace program which relies
on this *exact* error message format and greps dmesg?

> I'm not sure if we actually provide guarantees w.r.t kernel log
> messages. The issue in this specific scenario is the sheer verbosity
> of the log messages.

No, the issue is what I said above: userspace programs expecting exactly
this output. Once we exposed it to userspace, we cannot simply assume
that nothing is using it.

--
Regards/Gruss,
Boris.

Sent from a fat crate under my desk. Formatting is fine.
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