linux-kernel - Re: [PATCH 7/7] [v4] drivers/virt: introduce Freescale hypervisor management driver

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Message-Id: <201106101736.14850.arnd@arndb.de>
Date:	Fri, 10 Jun 2011 17:36:14 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Chris Metcalf <cmetcalf@...era.com>
Cc:	linuxppc-dev@...ts.ozlabs.org,
	Linux Virtualization <virtualization@...ts.linux-foundation.org>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Timur Tabi <timur@...escale.com>, konrad.wilk@...cle.com,
	kumar.gala@...escale.com, linux-kernel@...r.kernel.org,
	akpm@...nel.org, dsaxena@...aro.org, linux-console@...r.kernel.org,
	greg@...ah.com, alan@...rguk.ukuu.org.uk
Subject: Re: [PATCH 7/7] [v4] drivers/virt: introduce Freescale hypervisor management driver

On Friday 10 June 2011, Chris Metcalf wrote:
> This still leaves open the question of what really should go in this new
> directory. Is it just for drivers that manage/control the hypervisor?  Or
> is it also for drivers that just use the hypervisor to do I/O of some kind,
> but aren't related to any other "family" of drivers, i.e., a driver that
> would have been dumped in drivers/char or drivers/misc in the old days?
> 
> My specific interest at the moment is the proposed tile-srom.c driver
> (https://patchwork.kernel.org/patch/843892/), which uses a simple
> hypervisor read/write API to access the portion of the SPI ROM used to hold
> the boot stream for a TILE processor.

I'd still put that driver in drivers/char for now, because it already contains
similar drivers. We can probaby group them in a subdirectory of drivers/char
at some point or move them out to a new directory.

For your raw hcall passthrough driver, that would be something that should
go into drivers/virt/ IMHO.

	Arnd
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