[PATCH v2 1/4] xen/public: introduce DOMID_ANY

[Juergen Gross <jgross@xxxxxxxx>]

From: Denis Mukhin <dmukhin@xxxxxxxx>

Add DOMID_ANY to xen/include/public/xen.h meant to be a wildcard for
domids.

Signed-off-by: Denis Mukhin <dmukhin@xxxxxxxx>
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
---
This is based on Denis Mukhin's patch "xen/domain: introduce DOMID_ANY".
As my series is another use case for DOMID_ANY and it is a backport
candidate, I've split out the definition of DOMID_ANY from Denis'
patch in order to make progress for my series.
V2: update comment (Jason Andryuk)
---
 xen/include/public/xen.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/xen/include/public/xen.h b/xen/include/public/xen.h
index b12fd10e63..2149b8dd38 100644
--- a/xen/include/public/xen.h
+++ b/xen/include/public/xen.h
@@ -608,6 +608,13 @@ DEFINE_XEN_GUEST_HANDLE(mmuext_op_t);
 /* DOMID_INVALID is used to identify pages with unknown owner. */
 #define DOMID_INVALID        xen_mk_uint(0x7FF4)
 
+/*
+ * DOMID_ANY is used to signal no specific domain ID requested.
+ * Handler should pick a valid ID, or handle it as a wildcard value
+ * depending on the context.
+ */
+#define DOMID_ANY            xen_mk_uint(0x7FF5)
+
 /* Idle domain. */
 #define DOMID_IDLE           xen_mk_uint(0x7FFF)
 
-- 
2.53.0