 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] pfn to mfn mapping for HVM domains?
| To: | "Bryan D. Payne" <bryan@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] pfn to mfn mapping for HVM domains? |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Wed, 29 Nov 2006 07:59:17 +0000 |
| Delivery-date: | Tue, 28 Nov 2006 23:59:36 -0800 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxx |
| In-reply-to: | <BC4A5781-A08A-483E-9F90-78368BA5AFD0@xxxxxxxxxxxx> |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AccTjESQgubb139/EduwVgANk04WTA== |
| Thread-topic: | [Xen-devel] pfn to mfn mapping for HVM domains? |
| User-agent: | Microsoft-Entourage/11.2.5.060620 |
On 29/11/06 5:54 am, "Bryan D. Payne" <bryan@xxxxxxxxxxxx> wrote: > It turns out that the problem I ran into relates to how the value > "swapper_pg_dir" from the System map is used. For PV domains, this > value points to a location in memory that holds the virtual address > of the base of the kpgd. For HVM domains, this value points to the > base of the kpgd. I'm not sure why the difference exists (I'd > certainly be interested in learning if someone could explain it), but > this was the key insight that fixed my problems. It's the difference between 'pgd_t *' and 'pgd_t []'. PV guests get their swapper_pgdir from the domain builder rather than having it defined as an array in their static data section. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | [Xen-devel]Question about qemu interrupt deliver., Xu, Anthony |
|---|---|
| Next by Date: | Re: [Xen-devel] VMX status report 12591:7826e5482d42 with BLOCK issue, Keir Fraser |
| Previous by Thread: | Re: [Xen-devel] pfn to mfn mapping for HVM domains?, Bryan D. Payne |
| Next by Thread: | [Xen-devel] [PATCH] Build fix for OpenBSD, Christoph Egger |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
