linux-kernel - Re: [patch 1/3] ps3: Disk Storage Driver

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Message-ID: <Pine.LNX.4.62.0707181735110.15632@pademelon.sonytel.be>
Date:	Wed, 18 Jul 2007 17:36:01 +0200 (CEST)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	Jan Engelhardt <jengelh@...putergmbh.de>
cc:	Jens Axboe <axboe@...nel.dk>,
	"James E.J. Bottomley" <James.Bottomley@...elEye.com>,
	linux-scsi@...r.kernel.org,
	Alessandro Rubini <rubini@...vis.unipv.it>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	Paul Mackerras <paulus@...ba.org>,
	Jens Axboe <jens.axboe@...cle.com>
Subject: Re: [patch 1/3] ps3: Disk Storage Driver

On Wed, 18 Jul 2007, Jan Engelhardt wrote:
> On Jul 16 2007 18:15, Geert Uytterhoeven wrote:
> >Add a Disk Storage Driver for the PS3:
> >  - Implemented as a block device driver with a dynamic major
> >  - Disk names (and partitions) are of the format ps3d%c(%u)
> >  - Uses software scatter-gather with a 64 KiB bounce buffer as the hypervisor
> >    doesn't support scatter-gather
> 
> I wonder what virtualization has to do with a block device driver?

On the PS3, storage devices are virtualized by the hypervisor (yes, the PS3
runs all OSes under a hypervisor).

With kind regards,
 
Geert Uytterhoeven
Software Architect

Sony Network and Software Technology Center Europe
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