lkml.org 
[lkml]   [2008]   [Jul]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: Multiple MSI, take 3

There is one idea that seems to model this cleanly
without breaking all kinds of expectations.

That is an irq with a very small data payload.

In that case we wire all of the vectors up to a single
irq handler that computes the payload as:
payload = vector - base-vector.

And then we figure out how to pass that to the handler in irqaction.

To most of the system it is a single irq so it avoids breaking
expectations about what an irq is.

To everything else it is a little odd, and has it's own unique
set of rules (which is good as well).

Eric


\
 
 \ /
  Last update: 2008-07-11 13:45    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site