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

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Date:	Thu, 09 Jun 2011 09:32:33 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	linuxppc-dev@...ts.ozlabs.org,
	Linux Virtualization <virtualization@...ts.linux-foundation.org>,
	Timur Tabi <timur@...escale.com>, konrad.wilk@...cle.com,
	kumar.gala@...escale.com, linux-kernel@...r.kernel.org,
	cmetcalf@...era.com, 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 06/09/11 00:38, Arnd Bergmann wrote:
> On Thursday 09 June 2011 01:10:09 Randy Dunlap wrote:
>> On Wed, 8 Jun 2011 17:45:54 -0500 Timur Tabi wrote:
>>
>>> Add the drivers/virt directory, which houses drivers that support
>>> virtualization environments, and add the Freescale hypervisor management
>>> driver.
>>
>> It can't go in linux/virt or linux/virt/fsl instead?  why drivers/ ?
>>
>> or maybe linux/virt should be drivers/virt ?
> 
> See discussion for v2 of this patch. I suggested that drivers/firmware and virt/
> as options, the counterarguments were that drivers/firmware is for passive
> firmware as opposed to firmware that acts as a hypervisor, and that virt/ is
> for the host side of hypervisors like kvm, not for guests.

OK, I read that thread.  Didn't see a real consensus there.

If you were not the drivers/misc/ maintainer, would you mind if this
driver lived in drivers/misc/?  I wouldn't.

But it sounds like virt/ needs virt/host/ and virt/guest/ to me.


> The driver in here most closely resembles the xen dom0 model, where a
> priviledged guest controls other guests, but unlike xen there is a single
> driver file, so there is no need to have drivers/fsl-hv directory just
> for this one file. We do have a number of other hypervisors that fit in the
> same category, so they can be added here later.


-- 
~Randy
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