[Xen-devel] Is machine_to_phys_mapping a 4MB 'superpage'? - Jacob Gorm Hansen - com.xensource.lists.xen-devel

4 messages in com.xensource.lists.xen-devel[Xen-devel] Is machine_to_phys_mappin...

From	Sent On	Attachments
Jacob Gorm Hansen	30 Mar 2005 19:24
Keir Fraser	30 Mar 2005 23:52
Jacob Gorm Hansen	31 Mar 2005 00:47
Ian Pratt	31 Mar 2005 02:44

Subject:	[Xen-devel] Is machine_to_phys_mapping a 4MB 'superpage'?
From:	Jacob Gorm Hansen (jac...@diku.dk)
Date:	03/30/2005 07:24:46 PM
List:	com.xensource.lists.xen-devel

hi,

The machine_to_phys_mapping table is mapped permanently at 0xFC000000 (on x86-32). I would like to experiment with letting the domU map it at other locations in its virtual address space, but I suppose that for performance it is mapped as a 4MB 'super' page, and as such needs special treatment, is this correct?

Thanks, Jacob