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Re: [Xen-devel][RFC]degradation on IPF due to hypercall set irq

from [Keir Fraser] [Permanent Link][Original]
To: "Xu, Anthony" <anthony.xu@xxxxxxxxx>, Keir Fraser <keir@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel][RFC]degradation on IPF due to hypercall set irq
From: Keir Fraser <keir@xxxxxxxxxxxxx>
Date: Fri, 24 Nov 2006 15:28:47 +0000
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Thread-topic: [Xen-devel][RFC]degradation on IPF due to hypercall set irq
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On 24/11/06 14:45, "Xu, Anthony" <anthony.xu@xxxxxxxxx> wrote:

> Until now, I can't see hypercall is faster than share PIC line.
> 
> Can you enlighten me why we use hypercall?

I didn't change it for speed but because it's cleaner. I believe it can be
made no slower, with a bit of effort. x86 certainly won't be reverting to
the shared state.

 -- Keir


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