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Re: [Xen-devel] How can I map a foreign mfn when I'm in a workqueue?

To: zhefu jiang <guokeno0@xxxxxxxxx>
Subject: Re: [Xen-devel] How can I map a foreign mfn when I'm in a workqueue?
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Mon, 02 Nov 2009 12:50:25 -0800
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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.


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