Should message signaled interrupts (MSI) work with Intel GMA 950?
roland.list at gmail.com
Thu Sep 6 13:04:59 PDT 2007
> Yeah, I haven't looked at it much, I'd have to check the specs to see if
> we can deliver an MSI that indicates what type of interrupt we're
> receiving. If not, then the only benefit would be to avoid sharing I
Current Linux only supports using one MSI vector, so you can't get more
than one interrupt with MSI. You need MSI-X to use multiple vectors with
Linux right now.
Anyway the 945GM device in my system has:
Capabilities:  Message Signalled Interrupts: Mask- 64bit-
and the "Queue=0/0" part means that the device only supports one
MSI vector anyway.
So unfortunately no way to use separate interrupts for different events.
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