* interrupt handling in xen
@ 2005-09-06 18:00 Diwaker Gupta
2005-09-06 18:24 ` Keir Fraser
0 siblings, 1 reply; 2+ messages in thread
From: Diwaker Gupta @ 2005-09-06 18:00 UTC (permalink / raw)
To: xen-devel
I'm trying to understand interrupt handling in Xen (as described in
the "Restructuring I/O" techreport). But I'm having a hard time
finding all the bits and pieces in the code.
For instance, the text says "a device's interrupt line triggers
execution of a stub routing within Xen rather than causing immediate
entry into the domain that is managing that device". Can someone point
me to the code where this takes place?
TIA
--
Web/Blog/Gallery: http://floatingsun.net
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: interrupt handling in xen
2005-09-06 18:00 interrupt handling in xen Diwaker Gupta
@ 2005-09-06 18:24 ` Keir Fraser
0 siblings, 0 replies; 2+ messages in thread
From: Keir Fraser @ 2005-09-06 18:24 UTC (permalink / raw)
To: diwaker.lists; +Cc: xen-devel
On 6 Sep 2005, at 19:00, Diwaker Gupta wrote:
> For instance, the text says "a device's interrupt line triggers
> execution of a stub routing within Xen rather than causing immediate
> entry into the domain that is managing that device". Can someone point
> me to the code where this takes place?
arch/x86/irq.c:do_IRQ() calls __do_IRQ_guest() which does the demux to
guests.
-- Keir
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2005-09-06 18:00 interrupt handling in xen Diwaker Gupta
2005-09-06 18:24 ` Keir Fraser
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