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

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Subject:	[Xen-devel] How can I map a foreign mfn when I'm in a workqueue?
From:	zhefu jiang <guokeno0@xxxxxxxxx>
Date:	Sat, 31 Oct 2009 21:43:08 +0800
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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?

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