Re: [Xen-devel] Re: [RFC] [PATCH] sysfs support for Xen attributes

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 12 Jan 2006, at 15:14, Dave Hansen wrote:

> > This is a good set of questions. We have about half dozen files in
> > /proc/xen right now. One is an obvious canididate to stick in /dev, as
> > it has primarily an ioctl() interface.
> Actually, anything with an ioctl interface is probably a good cantidate
> for a writable sysfs file.  The basic idea is that we prefer something
> in sysfs with a discrete, unique name.  It also makes it a lot easier 
> to
> develop with because you can look at the values from scripts, and you
> don't have to worry about synchronizing any headers.
>
> So, what kind of ioctls are we talking about?
They are pretty low level. e.g., pass-thru a raw hypercall direct to 
xen, map another VM's pages into my address space (given a list of page 
frames), etc. very strongly binary, and unlikely to be useful for 
scripting.
 -- Keir


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