Hi, On Thu, Jul 16, 2009 at 12:04:21PM +0800, Da Zheng wrote: >> On Tue, Jul 07, 2009 at 01:33:17PM +0800, Da Zheng wrote:
>>> * Does the small interrupt routine in the kernel already exists? >> >> The problem is that this routine is actually pretty device-specific. >> In Linux UIO at least, every driver comes with a small kernel module >> handling this -- though I wonder whether it wouldn't be possible to >> upload a description is some simplistic "safe" language to the kernel >> at runtime, so we don't need to add any "real" (machine) code to the >> kernel for each new device. >> > Minix3 provides a generic interrupt handler in the kernel and the > user-level driver can provide different policies. I guess we can do > the same. Indeed that's exactly what I meant: only I don't know how complex the policies need to be, so I kept my statement generic. (In theory, the method for disabling interrupts on any particular device can be arbitrarily complex -- the question is how complex it gets in devices actually existing in the real world...) If the "language" really boils down to a few simple declarations, all the better :-) -antrik-
