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[Xen-devel] Question on xc_gnttab_map_grant_ref()
| To: | xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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| Subject: | [Xen-devel] Question on xc_gnttab_map_grant_ref() |
| From: | NAHieu <nahieu@xxxxxxxxx> |
| Date: | Thu, 3 Nov 2005 21:53:21 +0900 |
| Delivery-date: | Thu, 03 Nov 2005 12:50:24 +0000 |
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Hi, I am writing a kermel module in DomU, and this module grants a page of memory to Dom0. Then in Dom0 I try to grant_map it with xc_gnttab_map_grant_ref() But this function requires a flag, and I don't know which option to give it. I tried with either GNTMAP_application_map or GTF_reading|GTF_writing, but I always got this error: ERROR: do_gnttab_op: HYPERVISOR_grant_table_op failed: -1 Anybody please tell me how to use xc_gnttab_map_grant_ref() properly in Dom0's userspace? Many thanks. Hieu _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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