linux-kernel - Re: [PATCH] dell-wmi: Stop storing pointers to DMI tables

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Date:	Thu, 14 Jan 2016 14:07:31 +0000
From:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Pali Rohár <pali.rohar@...il.com>,
	Jean Delvare <jdelvare@...e.com>,
	Andy Lutomirski <luto@...nel.org>,
	platform-driver-x86@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dell-wmi: Stop storing pointers to DMI tables

> Jean, am I right that drivers must not store pointers to DMI tables
> that they find through dmi_walk?  Is there any alternative interface
> that could be used to get a longer-lived pointer to DMI tables, or
> should drivers just parse them and copy out any info needed from the
> dmi_walk callback?

The easiest long term solution might be to just map the dmi buffer once
and keep it. It's not that huge so it's not a big address space hog.

Alan