Lines Matching full:grant

36  * `incontents 150 gnttab Grant Tables
38  * Xen's grant tables provide a generic mechanism to memory sharing
42  * Each domain has its own grant table. This is a data structure that
44  * permissions other domains have on its pages. Entries in the grant
45  * table are identified by grant references. A grant reference is an
46  * integer, which indexes into the grant table. It acts as a
51  * between unprivileged domains. A grant reference also encapsulates
59  * GRANT TABLE REPRESENTATION
62 /* Some rough guidelines on accessing and updating grant-table entries
65 …* http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=blob;f=drivers/xen/grant-table.c;…
70  * Introducing a valid entry into the grant table:
88  *  which can set a timeout on the use of a grant entry and take necessary
97  *  [*] If GTF_transfer_committed is set then the grant entry is 'committed'.
98  *      The guest must /not/ modify the grant entry until the address of the
114  * Reference to a grant entry in a specified domain's grant table.
119  * A grant table comprises a packed array of grant entries in one or more
126  * Version 1 of the grant table entry structure is maintained purely
148 /* The first few grant table entries will be preserved across grant table
156  * Type of grant entry.
157  *  GTF_invalid: This grant entry grants no privileges.
173  *  GTF_reading: Grant entry is currently mapped for reading by @domid. [XEN]
174  *  GTF_writing: Grant entry is currently mapped for writing by @domid. [XEN]
177  *                             mappings of the grant [GST]
178  *  GTF_sub_page: Grant access to only a subrange of the page.  @domid
179  *                will only be allowed to copy from the grant, and not
201  *      it must /not/ modify the grant entry until GTF_transfer_completed is
213  * GRANT TABLE QUERIES AND USES
245  * Handle to track a mapping created via a grant reference.
250  * GNTTABOP_map_grant_ref: Map the grant entry (<dom>,<ref>) for access
264  *     to be accounted to the correct grant reference!
281  * GNTTABOP_unmap_grant_ref: Destroy one or more grant-reference mappings
303  * GNTTABOP_setup_table: Set up a grant table for <dom> comprising at least
309  *  3. Xen may not support more than a single grant-table page per domain.
332  /* Map the grant entry for access by I/O devices. */
335  /* Map the grant entry for access by host CPUs. */
387 	"invalid grant reference",			\