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Re: [Xen-users] Dom0 Device Driver Access
| To: | xen-users@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | Re: [Xen-users] Dom0 Device Driver Access |
| From: | "Todd Deshane" <deshantm@xxxxxxxxx> |
| Date: | Tue, 17 Jun 2008 23:18:14 -0400 |
| Delivery-date: | Tue, 17 Jun 2008 20:18:46 -0700 |
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| References: | <e3977d9c0806120546p796bfbbahf600a738170d5b0f@xxxxxxxxxxxxxx> <e3977d9c0806171000y42af979fo6822154c5519e30c@xxxxxxxxxxxxxx> <200806172315.12715.jim_burn@xxxxxxxxxxxxx> |
| Reply-to: | deshantm@xxxxxxxxx |
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On Tue, Jun 17, 2008 at 11:15 PM, jim burns <jim_burn@xxxxxxxxxxxxx> wrote: > On Tuesday June 17 2008 01:00:25 pm Artur Baruchi wrote: >> Does Dom0 access device driver using Ring Structures (like DomU does) >> or it has direct access to Device Driver (like Native Linux)? > > Yes and no. Things like memory management and paging are done by xen.gz. > Device access is (usually) done by dom0. xen.gz runs in ring 0; dom0 runs in > ring 1 (not sure about the domus); and userland runs in ring 3. A quick > search of xen.org couldn't provide a url to back this up. > suggested reading: Xen and the Art of Virtualization www.cl.cam.ac.uk/research/srg/netos/papers/2003-xensosp.pdf > _______________________________________________ > Xen-users mailing list > Xen-users@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-users > _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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