From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: How can I map a foreign mfn when I'm in a workqueue?
Date: Mon, 02 Nov 2009 12:50:25 -0800
Message-ID: <4AEF4611.9080706@goop.org>
References: <e4354b450910310643v436e59ccy69b2c8b53c28f0f9@mail.gmail.com>
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To: zhefu jiang <guokeno0@gmail.com>
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On 10/31/09 06:43, zhefu jiang wrote:
> I use alloc_vm_area/direct_kernel_remap_pfn_range/unmap_vm_area to map
> a foreign pfn into dom0's kernel address space, all goes well with the
> exception that when I use them in a workqueue, dom0's kernel fails to
> map the page and gives me these error messages:
>  
> Unable to handle kernel paging request at xxxxxx...
>  
> Does anyone have some idea about it?

You haven't posted enough detail for anyone to be able to help you.

    J