From: Jeremy Fitzhardinge <jeremy@goop.org>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH 24/29] ia64/pv_ops/xen: implement xen pv_time_ops.
Date: Thu, 17 Jul 2008 14:21:37 +0000 [thread overview]
Message-ID: <487F5571.5000803@goop.org> (raw)
In-Reply-To: <12162606623288-git-send-email-yamahata@valinux.co.jp>
Isaku Yamahata wrote:
> I had explained about that.
> I had considered that option. However my conclusion is not share
> he implementation because xen/ia64 timer interrupt isn't
> paravirtualized with VCPUOP_xxx hypercall. But xen/ia64 emulates
> ar.itm register. (ar.itm is interval time match register which triggers
> interrupt when interval time counter becomes same value)
>
> Since timer interruption is virtualized differently on xen/ia64,
> the different implementation is a natural consequence.
OK, that means the clockevent and clocksource part would be different.
But the runstate accounting should still be the same, no?
J
next prev parent reply other threads:[~2008-07-17 14:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-17 2:10 [PATCH 24/29] ia64/pv_ops/xen: implement xen pv_time_ops Isaku Yamahata
2008-07-17 5:45 ` Jeremy Fitzhardinge
2008-07-17 6:11 ` Isaku Yamahata
2008-07-17 14:21 ` Jeremy Fitzhardinge [this message]
2008-07-18 2:17 ` Isaku Yamahata
2008-07-18 4:51 ` Jeremy Fitzhardinge
2008-07-18 16:28 ` Luck, Tony
2008-07-18 18:25 ` Jeremy Fitzhardinge
2008-07-18 22:44 ` Luck, Tony
2008-07-21 8:12 ` Avi Kivity
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