From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: Re: VM hung after running sometime
Date: Tue, 28 Sep 2010 10:07:28 -0700
Message-ID: <4CA220D0.7070309@goop.org>
References: <C8BE230D.239BA%keir.fraser@eu.citrix.com>, ,
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	, <4C9A4B7A.3010308@goop.org>,
	<BAY121-W31394CA05B46D94F7DC8F8DA610@phx.gbl>,
	<4C9BE0A9.40709@goop.org>,
	<BAY121-W4337007E1CA28BC7E72547DA660@phx.gbl>
	<BAY121-W2087D6896693255FFB54C2DA660@phx.gbl>
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To: MaoXiaoyun <tinnycloud@hotmail.com>
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 On 09/28/2010 04:23 AM, MaoXiaoyun wrote:
>
> Is it safe to set irq affinity(including NIC, domain event, etc) manually?
> Will it cause irq lost?

There's only a very small chance of a lost interrupt, especially if the
device is mostly idle at the time. The event can only be lost if:

   1. it is handling a device interrupt
   2. you migrate it to another cpu
   3. another interrupt comes in before the first one has finished
      processing

J