From: Keir Fraser <keir.fraser@eu.citrix.com>
To: James Harper <james.harper@bendigoit.com.au>,
xen-devel@lists.xensource.com
Subject: Re: trigger an interrupt in HVM
Date: Fri, 22 Aug 2008 08:12:40 +0100 [thread overview]
Message-ID: <C4D42578.1C5F0%keir.fraser@eu.citrix.com> (raw)
In-Reply-To: <AEC6C66638C05B468B556EA548C1A77D014903C5@trantor>
On 22/8/08 02:24, "James Harper" <james.harper@bendigoit.com.au> wrote:
> As an alternative, could I do an alloc_unbound (DOMID_SELF, DOMID_SELF)
> and then bind_interdomain to it?
Yes, it's just that that burns two event-channel ports, whereas an IPI port
burns just one.
> As another alternative, I have previously been using the asm 'int x'
> instructions to call isr's... that could work too although of course
> without the source code to windows it's hard to tell exactly what the
> implications of that might be :)
I wouldn't advise it -- the ISR will EOI the LAPIC even though the LAPIC did
not deliver the interrupt. A safer way to go might be to self-IPI via the
LAPIC.
-- Keir
next prev parent reply other threads:[~2008-08-22 7:12 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-21 0:22 trigger an interrupt in HVM James Harper
2008-08-21 2:04 ` Cui, Dexuan
2008-08-21 2:32 ` James Harper
2008-08-21 3:04 ` Cui, Dexuan
2008-08-21 3:51 ` Tian, Kevin
2008-08-21 7:43 ` Keir Fraser
2008-08-22 1:24 ` James Harper
2008-08-22 7:12 ` Keir Fraser [this message]
2008-08-26 3:19 ` James Harper
2008-08-26 4:40 ` James Harper
2008-08-26 7:10 ` Keir Fraser
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