[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] grant table interface addition?
In order to be able to set some of the available bits in the pte resulting from gnttab_set_map_op() (in particular PAGE_SPECIAL and possibly PAGE_IO), it would seem necessary to extend the set of flags that can be passed to that function. While the addition by itself is a simple operation, the question is how to deal with backward compatibility here: Is there anything preventing the guest kernel from setting the flags it wants manually after Xen established the mapping, i.e. would Xen either disallow any modification to such pte-s, or get confused by the pte not being identical to what it set it to? As to PAGE_IO, wouldn't it be appropriate to set this flag on pte-s created with GNTMAP_device_map? Or is the name misleading me? I'm perhaps confused by the fact that the use of this flag is not tied to granting iomem pages... Thanks, Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
![]() |
Lists.xenproject.org is hosted with RackSpace, monitoring our |