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[Xen-devel] [PATCH] Handle MSI irq storm

To: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>
From: "Shan, Haitao" <haitao.shan@xxxxxxxxx>
Date: Thu, 3 Jul 2008 13:15:06 +0800
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Wed, 02 Jul 2008 22:17:41 -0700
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
Thread-index: Acjcy8F+D4qxw0AnTb6V8UsSMvI8Bw==
Thread-topic: [PATCH] Handle MSI irq storm

 <<handle_msi_irq_storm.patch>> Hi, Keir,

This patch handles MSI irq storm. Unluckily, I have observed this
phenomenon again. This will happen when some kind of MSI-X capable NIC
is assigned to an HVM guest. The basic idea is to mask the interrupt on
receiving the second interrupt and set a timer to unmask after 1ms.
Can you have a look and give some comments on that? Thanks!

Best Regards
Shan Haitao

Attachment: handle_msi_irq_storm.patch
Description: handle_msi_irq_storm.patch

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