On 10/27/2010 3:21 PM, Alan Cox wrote:

On Wed, 27 Oct 2010 12:54:27 -0400 Chris Metcalf [off-list ref] wrote:

quoted

The tile architecture uses this framework for our serial console,

That may be a mistake unless your console is genuinely only capable of
polled input.

The console is in fact interrupt-driven within the hypervisor, and data is
buffered there.  However, the current hypervisor console API is only
"write" and "read".  We have a bugzilla to add console interrupts to the
hypervisor API and use them from Linux, but we haven't done it yet.

-- 
Chris Metcalf, Tilera Corp.
http://www.tilera.com