linux-kernel - Re: [NAK] Re: [PATCH -v2 9/9] ACPI, APEI, Generic Hardware Error Source POLL/IRQ/NMI notification type support

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Message-ID: <AANLkTi=2SVT1M+nDZUB7EB05jh+tsuKcew_t66QORrwb@mail.gmail.com>
Date:	Mon, 25 Oct 2010 10:14:52 -0700
From:	Tony Luck <tony.luck@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Huang Ying <ying.huang@...el.com>, Len Brown <lenb@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andi Kleen <andi@...stfloor.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	Borislav Petkov <petkovbb@...glemail.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Don Zickus <dzickus@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mauro Carvalho Chehab <mchehab@...hat.com>
Subject: Re: [NAK] Re: [PATCH -v2 9/9] ACPI, APEI, Generic Hardware Error
 Source POLL/IRQ/NMI notification type support

On Mon, Oct 25, 2010 at 2:25 AM, Ingo Molnar <mingo@...e.hu> wrote:

> drivers/acpi/apei/ overlaps and duplicates drivers/edac/. We dont want two
> facilities, two ABIs, two sets of behavior. erst-dbg even defines a /dev node with
> two ioctls, and a debugfs file to read/write records ...

As mentioned above these 4-letter names from from the ACPI specification. ERST
is perhaps the dumbest name of them all - "Error Record Serialization Table" is
ACPI-speak for platform level non-volatile memory.  This code simply provides
a mechanism for Linux to stash some information in nvram before the system is
reset, and to retrieve it after the reboot.

The naming could be better - but I don't see any overlap with EDAC here.

-Tony
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