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Re: [Xen-devel] Help/problems with blktap on xen-unstable


On Thu, 2006-09-21 at 07:58 -0400, Steven Rostedt wrote:

> As a miscellaneous device, it no longer has a major number.  All 
> versions would become a miscellaneous device. So instead of having a 
> blktap major, and the minor pointing to each of the blktap descriptors 
> in the array, you would record the minor in the descriptor, and among 
> opening the device, you need to search the descriptors to find the minor 
> that matches the opened device.

There's an easy way to do both, I think.  We already have an ioctl to
return the blktap major, so simply registering the control device as a
misc device and then allocating the major for the full set of domain
devices dynamically should work.


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