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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-10-07 07:46:59 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-10-07 07:46:59 +0100 |
| commit | b545941b663862973bcdf2c089e999c7a42cdd7c (patch) | |
| tree | 3825103ae16cf737502caf498fd21ff565253629 /xen/include/xen/grant_table.h | |
| parent | a98dc13703e091bb94e86a537d5c7a0ef9ffb62f (diff) | |
| download | xen-b545941b663862973bcdf2c089e999c7a42cdd7c.tar.gz xen-b545941b663862973bcdf2c089e999c7a42cdd7c.tar.bz2 xen-b545941b663862973bcdf2c089e999c7a42cdd7c.zip | |
Implement sub-page grant support.
Signed-off-by: Steven Smith <steven.smith@citrix.com>
Diffstat (limited to 'xen/include/xen/grant_table.h')
| -rw-r--r-- | xen/include/xen/grant_table.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/xen/include/xen/grant_table.h b/xen/include/xen/grant_table.h index 5eb44874d5..f94bfb1b0b 100644 --- a/xen/include/xen/grant_table.h +++ b/xen/include/xen/grant_table.h @@ -30,10 +30,15 @@ /* Active grant entry - used for shadowing GTF_permit_access grants. */ struct active_grant_entry { - u32 pin; /* Reference count information. */ - domid_t domid; /* Domain being granted access. */ + u32 pin; /* Reference count information. */ + domid_t domid; /* Domain being granted access. */ + unsigned long frame; /* Frame being granted. */ unsigned long gfn; /* Guest's idea of the frame being granted. */ - unsigned long frame; /* Frame being granted. */ + unsigned is_sub_page:1; /* True if this is a sub-page grant. */ + unsigned start:15; /* For sub-page grants, the start offset + in the page. */ + unsigned length:16; /* For sub-page grants, the length of the + grant. */ }; /* Count of writable host-CPU mappings. */ |