linux-kernel - Re: RFC: APEI hardware reduced profile

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Message-ID: <6220935.TPfvPdvLIs@vostro.rjw.lan>
Date:	Wed, 26 Mar 2014 15:55:07 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Tomasz Nowicki <tomasz.nowicki@...aro.org>
Cc:	Len Brown <lenb@...nel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linaro-acpi <linaro-acpi@...ts.linaro.org>,
	Tony <tony.luck@...el.com>, Borislav Petkov <bp@...en8.de>,
	Borislav Petkov <bp@...e.de>,
	Mauro Carvalho Chehab <m.chehab@...sung.com>
Subject: Re: RFC: APEI hardware reduced profile

On Wednesday, March 26, 2014 01:08:10 PM Tomasz Nowicki wrote:
> Hi,

Hi,

This is a question for Tony, Boris and Mauro (CCed now).

> Currently APEI depends on x86 architecture. It is because of many x86 
> specific features like "IA-32 Architecture Corrected Machine Check
> " error source or NMI hardware error notification. However, many other 
> features like "PCI Express Device AER Structure" or GHES via external 
> interrupt can be still used perfectly by other architectures. So my idea 
> is to move x86 dependency away form Kconfig to APEI areas where it 
> really applies to.
> 
> I have started refactoring ghes.c driver in that direction. And here 
> comes my confusion, how should we treat x86 related parts, as fixed 
> profile? (which means we could use ACPI_REDUCED_HARDWARE or 
> CONFIG_ACPI_REDUCED_HARDWARE_ONLY define). I would like to ask for your 
> opinion.

Thanks!

-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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