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[Xen-ia64-devel] PATCH: move IO type to ppn (VTi)

To: Xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxx>
From: tgingold@xxxxxxx
Date: Tue, 25 Mar 2008 06:14:18 +0100
Delivery-date: Mon, 24 Mar 2008 22:01:19 -0700
List-id: Discussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>

Hi,

Instead of using 3 extra bits in pte to store the io type, only one bit
is used to mark the page as an IO page and the type is stored in the ppn
field.  This both save 2 bits and allow many more io types.

Move the VTi memory map to arch-ia64/hvm/memmap.h

Tristan.

Attachment: memmap.diff
Description: Text document

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