Re: [Xen-devel] [PATCH] /sys/hypervisor/uuid

["Christian Limpach" <christian.limpach@xxxxxxxxx>]

On 5/19/06, Jeremy Katz <katzj@xxxxxxxxxx> wrote:
> > Let me copy/paste from my previous message you replied to and quoted:
> > it was only added to support driver domains getting information about
> > the devices to configure.
>
> But isn't the device configuration there happening from the kernel?
> I'll admit I haven't played with getting any of the device passthrough
> stuff going since those patches went in.  I'm just not clear on what
> benefit having userspace being able to frob at xenstore from domU really
> has.  And in any case, getting it upstream is going to be an uphill
> battle at best
For some of the device setup, it is more flexible if it happens in
userspace.  For example, figuring out what device a given name
corresponds too (needs lookup in /dev) or binding a loop device for a
file backed vbd.

Instead of inventing yet another interface for the kernel to
communicate with our hotplug scripts (and back), we decided to use
xenstore.

   christian

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