linux-kernel - Re: SMBIOS/DMI data under CONFIG_STRICT

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Message-ID: <CAOesGMi3=QkiQ326nFfGTjsOKrGqgO-q+r+A4Uc_9YWCDrAtwA@mail.gmail.com>
Date:	Sat, 17 Jan 2015 13:10:11 -0800
From:	Olof Johansson <olof@...om.net>
To:	Jon Masters <jcm@...hat.com>
Cc:	Catalin Marinas <Catalin.Marinas@....com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: SMBIOS/DMI data under CONFIG_STRICT_DEVMEM

Hi,

On Sat, Jan 17, 2015 at 12:12 PM, Jon Masters <jcm@...hat.com> wrote:
> Hi Catalin, all,
>
> I would like to ensure that the SMBIOS data provided by firmware is
> always readable from userspace on AArch64, through /dev/mem.

Seems like this would be a good opportunity for cleanup and fixing
userspace to use /sys/firmware/dmi interfaces instead of having to go
poking through /dev/mem. That way they don't have to be privileged
process any more and is a general security benefit for everybody.


-Olof
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