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[Xen-devel] Grant Table problem mapping dom0 mem to domU
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] Grant Table problem mapping dom0 mem to domU |
| From: | "Carlos Perez" <carlosrene@xxxxxxxxx> |
| Date: | Wed, 25 Jul 2007 11:41:30 -0400 |
| Delivery-date: | Wed, 25 Jul 2007 08:39:06 -0700 |
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| Reply-to: | carlos@xxxxxxxxx |
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I've been looking through some back-end drivers and I notice that grant tables are used to map domU memory into the privileged domain, is the opposite possible? Can I map dom0 memory into a domU? I've written code grants foreign access to a page from dom0 (take the grant ref_id) then on domU I try to map it (basically the same way ex blkback does it, or just any other driver for that matter) and all I get from HYPERVISOR_grant_table_op() is a -1 return value, op.status is empty=0. I'll send more information on the specific error, if I at least know that this can be done and I'm just not falling of a cliff. Also, if it is possible, can you point me to some example code? thanks, C. René _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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