| To: | "Tian, Kevin" <kevin.tian@xxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: /dev/mem and /dev/kmem |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | 2007年3月21日 10:07:54 +0000 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | 2007年3月21日 03:07:00 -0700 |
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> Based on different interfaces used by /dev/mem and /dev/kmem > (direct_remap_pfn_range for former, and remap_pfn_range for the > latter), could I think that /dev/mem is the interface for dom0 to map > machine memory directly, while /dev/kmem is still geared to dom0's > own memory? If yes, then I may understand how Xserver can map > VGABIOS and why DOMID_IO is used for /dev/mem... :-) Yes, that's about right. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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