[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: RFC: Using grant table to give iomem permission
On 18/5/07 15:01, "Kieran Mansley" <kmansley@xxxxxxxxxxxxxx> wrote: > When finished, the mapping domain can similarly unmap the grant, which > removes its ability to ioremap() the page: > struct gnttab_unmap_grant_ref op; > gnttab_set_unmap_op(&op, 0, GNTMAP_iomem_map, handle); > if (HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, &op, 1)) > BUG(); > > Some questions from me: > - does this approach seem sane? There's no reason you shouldn't be able to use GNTMAP_host_map as usual, and do refcounting in the active grant entry, also as usual. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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