Xen devel - Jan 2010 - About EVTCHNOP_bind_pirq requests

Hi, all

I''m reading http://wiki.xensource.com/xenwiki/XenIntro and it says the
IRQ_GUEST flag is set for all interrupts except for timer and serial
interrupts. After reading some Xen source code I also find that IRQ_GUEST is
only set by the EVTCHNOP_bind_pirq requests. So I''d like to know if
these
requests are called by the guest OS, and does Xen check if the requests are
valid? (For example, what will happen if the guest OS tries to bind the
timer interrupt pirq?)

Many thanks.

-- 
Best regards,
Wang Yuanxuan
Parallel Processing Institute, Fudan University


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I guess after EVTCHNOP_bind_pirq, when corresponding pirq happens,
XEN will notify guest through evtchn.

Thanks
Pengcheng

2010/1/6 ZelluX <zellux@gmail.com>
> Hi, all
>
> I''m reading http://wiki.xensource.com/xenwiki/XenIntro and it says
the
> IRQ_GUEST flag is set for all interrupts except for timer and serial
> interrupts. After reading some Xen source code I also find that IRQ_GUEST
is
> only set by the EVTCHNOP_bind_pirq requests. So I''d like to know
if these
> requests are called by the guest OS, and does Xen check if the requests are
> valid? (For example, what will happen if the guest OS tries to bind the
> timer interrupt pirq?)
>
> Many thanks.
>
> --
> Best regards,
> Wang Yuanxuan
> Parallel Processing Institute, Fudan University
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>
>

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