linux-kernel - Re: [PATCH 30 of 38] xen: implement io_apic

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Message-ID: <20081120093506.GB6885@elte.hu>
Date:	Thu, 20 Nov 2008 10:35:06 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	linux-kernel@...r.kernel.org,
	Xen-devel <xen-devel@...ts.xensource.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	Ian Campbell <ian.campbell@...rix.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Yinghai Lu <yinghai@...nel.org>
Subject: Re: [PATCH 30 of 38] xen: implement io_apic_ops


* Jeremy Fitzhardinge <jeremy@...p.org> wrote:

> Writes to the IO APIC are paravirtualized via hypercalls, so implement
> the appropriate operations.
> 
> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
> ---
>  arch/x86/xen/Makefile    |    3 +-
>  arch/x86/xen/apic.c      |   66 ++++++++++++++++++++++++++++++++++++++++++++++
>  arch/x86/xen/enlighten.c |    2 +
>  arch/x86/xen/xen-ops.h   |    2 +
>  4 files changed, 72 insertions(+), 1 deletion(-)

hm, why is the ioapic used as the API here, and not an irqchip?

	Ingo
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