zhefu jiang
2009-Oct-31 13:43 UTC
[Xen-devel] How can I map a foreign mfn when I''m in a workqueue?
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? _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Jeremy Fitzhardinge
2009-Nov-02 20:50 UTC
Re: [Xen-devel] How can I map a foreign mfn when I''m in a workqueue?
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 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel