RE: [Xen-ia64-devel] IRQ management

["Magenheimer, Dan (HP Labs Fort Collins)" <dan.magenheimer@xxxxxx>]

Only the timer and serial port need to be virtualized.
Serial console output is handled through common code
in xen/drivers/char.  I believe this code is also used
on Xen/x86 for serial console input but input has not
yet been implemented on Xen/ia64... it's probably
not hard to do but nobody has done it yet.

Dan 

> -----Original Message-----
> From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf 
> Of Tristan Gingold
> Sent: Monday, October 24, 2005 8:43 AM
> To: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-ia64-devel] IRQ management
> 
> Hi,
> 
> Recently I looked a little bit on how IRQs are managed.
> Correct me if I am wrong but on xen-ia64, only LSAPIC is 
> virtualized.  IOSAPIC 
> is not and devices interrupt are fully managed by domain0.
> On xen-x86, IRQs are fully virtualized by xen.
> 
> Since they are not virtualized on xen-ia64, the serial 
> console input doesn't 
> work, and we can't use the xenkeys.
> 
> Are IRQs planned to be virtualized ?
> 
> Tristan.
> 
> 
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