On Tue, 7 Aug 2012, Konrad Rzeszutek Wilk wrote:

On Mon, Aug 06, 2012 at 03:27:24PM +0100, Stefano Stabellini wrote:

quoted

Update struct xen_add_to_physmap to be in sync with Xen's version of the
structure.
The size field was introduced by:

changeset:   24164:707d27fe03e7
user:        Jean Guyader [off-list ref]
date:        Fri Nov 18 13:42:08 2011 +0000
summary:     mm: New XENMEM space, XENMAPSPACE_gmfn_range

According to the comment:

"This new field .size is located in the 16 bits padding between .domid
and .space in struct xen_add_to_physmap to stay compatible with older
versions."

Changes in v2:

Looks good. Let me take this as in my tree to prep it for Mukesh's patches.

OK.
Beware that patch #23 is going to modify xen_add_to_physmap again to
replace .size with a union.

quoted

- remove erroneous comment in the commit message.

Signed-off-by: Stefano Stabellini <redacted>
---
 include/xen/interface/memory.h |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/include/xen/interface/memory.h b/include/xen/interface/memory.h
index b5c3098..b66d04c 100644
--- a/include/xen/interface/memory.h
+++ b/include/xen/interface/memory.h

@@ -163,6 +163,9 @@ struct xen_add_to_physmap {
     /* Which domain to change the mapping for. */
     domid_t domid;
 
+    /* Number of pages to go through for gmfn_range */
+    uint16_t    size;
+
     /* Source mapping space. */
 #define XENMAPSPACE_shared_info 0 /* shared info page */
 #define XENMAPSPACE_grant_table 1 /* grant table page */

-- 
1.7.2.5