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[Xen-devel] Got a strange IRQ

To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] Got a strange IRQ
From: "Lily Huang" <ushuanglily@xxxxxxxxx>
Date: Thu, 4 May 2006 11:58:09 -0400
Delivery-date: Thu, 04 May 2006 08:58:30 -0700
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I ran into a strange problem:

After I used "bind_evtchn_to_irqhandler" to bind an evtchn to a irq handler, I noticed that the interrupt handler was triggered although actually no IRQ was injected. This problem happened exactly once for each run.

Also, I  had problem in release shared pages. At the backend, I initially allocate certain pages with alloc_pages(), then map several pages from frontend to the address of the allocated pages. After my work is done,
I first unmap the shared pages, then I tried to free the allocated pages with free_pages. But I got a kernel error " page flag bit is not right", and error message also shows that refcount of these pages are 0, which seems
to be normal. Did I do something wrong with the page sharing?

Thanks a lot!

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