linux-kernel - Re: [PATCH 3/4] ACPI / APEI: Drop uninformative messages during boot

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Message-ID: <20170720111732.GC18515@nazgul.tnic>
Date:   Thu, 20 Jul 2017 13:17:32 +0200
From:   Borislav Petkov <bp@...e.de>
To:     Punit Agrawal <punit.agrawal@....com>
Cc:     linux-kernel@...r.kernel.org, lorenzo.pieralisi@....com,
        sudeep.holla@....com, linux-acpi@...r.kernel.org,
        "Rafael J. Wysocki" <rjw@...ysocki.net>
Subject: Re: [PATCH 3/4] ACPI / APEI: Drop uninformative messages during boot

On Thu, Jul 20, 2017 at 12:04:01PM +0100, Punit Agrawal wrote:
> When booting an ACPI enabled system that does not provide the hardware
> error source table (HEST), the ghes driver prints the following message
> in the kernel log -
> 
> [    3.460067] GHES: HEST is not enabled!
> 
> which is not helpful.
> 
> The message is also output when HEST is explicitly disabled using kernel
> command line parameter.
> 
> Drop this message. While we are touching this code, also drop similar
> message when GHES is disabled using the module parameter.

No.

To the contrary, we want to know *why* GHES/HEST doesn't get enabled when
booting. See

  dba648300e89 ("ACPI / einj: Make error paths more talkative")

for a good example why.

If anything, you should do the total opposite patch and add more
printks to the error paths so that it is obvious why GHES startup fails.

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--