A subsequent patch will modify libxl to allow selection of a random domid
value when creating domains. Valid values are limited to a width of 15 bits,
so add an appropriate mask definition to the public header.
NOTE: It is reasonable for this mask definition to be in a Xen public header
rather than in, say, a libxenctrl header since it relates to the
validity of a value passed to XEN_DOMCTL_createdomain. This new
definition is placed in xen.h rather than domctl.h only to co-locate
it with other domid-related defitions.
Signed-off-by: Paul Durrant <pdurr...@amazon.com>
Reviewed-by: Ian Jackson <ian.jack...@eu.citrix.com>
---
Cc: Andrew Cooper <andrew.coop...@citrix.com>
Cc: George Dunlap <george.dun...@eu.citrix.com>
Cc: Jan Beulich <jbeul...@suse.com>
Cc: Julien Grall <jul...@xen.org>
Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Wei Liu <w...@xen.org>
v6:
- New in v6 (split out from another patch)
---
xen/include/public/xen.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/xen/include/public/xen.h b/xen/include/public/xen.h
index d2198dffad..75b1619d0d 100644
--- a/xen/include/public/xen.h
+++ b/xen/include/public/xen.h
@@ -614,6 +614,9 @@ DEFINE_XEN_GUEST_HANDLE(mmuext_op_t);
/* Idle domain. */
#define DOMID_IDLE xen_mk_uint(0x7FFF)
+/* Mask for valid domain id values */
+#define DOMID_MASK xen_mk_uint(0x7FFF)
+
#ifndef __ASSEMBLY__
typedef uint16_t domid_t;
--
2.20.1
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