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From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [PATCH 1/3] ide: add "ignore_hpa" module parameter
Date: Tue, 26 May 2009 19:15:46 +0200
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Cc: Frans Pop <elendil@planet.nl>, linux-ide@vger.kernel.org,
       linux-kernel@vger.kernel.org
References: <200905252344.11826.bzolnier@gmail.com> <200905261423.40117.bzolnier@gmail.com> <20090526135343.5bcaa92b@lxorguk.ukuu.org.uk>
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On Tuesday 26 May 2009 14:53:43 Alan Cox wrote:
> > Please note that no fancy sysfs support was needed to prevent the problem:
> > both stacks (ide & libata) support HDIO_DRIVE_TASK ioctl which can be used
> > to execute commands needed to retrieve/change HPA setting.
> 
> Wrong. You need sysfs support because you may not be able to retrieve the
> HPA settings after the drive has removed them. You also need a trigger of

All information was there (kernel logs).

Moreover the default in libata is to not remove HPA settings.

I don't recommend parsing kernels logs in search of such information but
you're are stretching the reality too far to match with your arguments.