Re: mapped memory delay?

[Jacob Gorm Hansen <jacobg@diku.dk>]

Mark Williamson wrote:
> If you're sharing memory directly between the two then you don't need to 
> involve xcs (other than in the setup phase) since that just does control 
> messages.
> 
> You might find the ring macros in xen/include/public/ring.h useful.  They make 
> it easy to declare ring datatypes (with appropriately sized rings) and 
> maintain producer / consumer indexes, with the appropriate memory barriers.
> 
> Examples of use are in linux-2.6.10-xen-sparse/drivers/xen/{blk,usb}
> {back,front}.  (the net drivers use a slightly different ring format 
> instead).

Hmm will this be any different if the guy I wish to share this with in 
dom0 is a userspace process? Can I use /dev/evtchn for that, or do I 
have to cook my own device node for this?

thanks,

Jacob


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