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[Xen-devel] /dev/mem and /dev/kmem
| To: | "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] /dev/mem and /dev/kmem |
| From: | "Tian, Kevin" <kevin.tian@xxxxxxxxx> |
| Date: | Wed, 21 Mar 2007 16:15:51 +0800 |
| Delivery-date: | Wed, 21 Mar 2007 01:15:00 -0700 |
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| Thread-index: | AcdrkSOYgXV9tRVkQniyC1DivAnLKA== |
| Thread-topic: | /dev/mem and /dev/kmem |
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... :-) Thanks, Kevin _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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