[PATCH 24/40] Staging: hv: storvsc: On I/O get the correct IDE device

[KY Srinivasan]

> -----Original Message-----
> From: Christoph Hellwig [mailto:hch at infradead.org]
> Sent: Friday, July 01, 2011 4:17 AM
> To: KY Srinivasan
> Cc: Christoph Hellwig; gregkh at suse.de; linux-kernel at vger.kernel.org;
> devel at linuxdriverproject.org; virtualization at lists.osdl.org; Haiyang Zhang;
> Abhishek Kane (Mindtree Consulting PVT LTD); Hank Janssen
> Subject: Re: [PATCH 24/40] Staging: hv: storvsc: On I/O get the correct IDE device
> 
> On Thu, Jun 30, 2011 at 09:15:54PM +0000, KY Srinivasan wrote:
> > That is what I did initially. Then looking at the way we  were handling scsi
> devices
> > where each scsi controller configured for the guest results in an emulated HBA
> > (scsi host) in the guest and all the block devices under a given controller are
> > handled through this one host, I decided to mimic a similar structure  - one
> > scsi host for all the block devices configured as an IDE device.
> >
> > I can go back to my earlier implementation with one host per disk.
> 
> Was there any downside you noticed from using one host per emulated
> disk?
Nothing I could see from whatever testing I did. However, the guest will have
Scsi hosts that the user did not configure. This is certainly the case in both 
approaches - just the numbers are different!

K. Y