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[Xen-devel] [PATCH] Handle MSI irq storm
| To: | "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH] Handle MSI irq storm |
| 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 |
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| 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
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