[Xen-changelog] [xen master] public/hvm: export the HVM_PARAM_CALLBACK_VIA ABI in the API

[patchbot@xxxxxxx]

commit ca5c54b6ff054512d9529af8db7b1d0bf89a5d20
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Tue Dec 15 14:15:03 2015 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Dec 15 14:15:03 2015 +0100

    public/hvm: export the HVM_PARAM_CALLBACK_VIA ABI in the API
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/include/public/hvm/params.h |   29 +++++++++++++++++++++--------
 1 files changed, 21 insertions(+), 8 deletions(-)

diff --git a/xen/include/public/hvm/params.h b/xen/include/public/hvm/params.h
index b437444..81f9451 100644
--- a/xen/include/public/hvm/params.h
+++ b/xen/include/public/hvm/params.h
@@ -29,18 +29,31 @@
  * Parameter space for HVMOP_{set,get}_param.
  */
 
+#define HVM_PARAM_CALLBACK_IRQ 0
 /*
  * How should CPU0 event-channel notifications be delivered?
- * val[63:56] == 0: val[55:0] is a delivery GSI (Global System Interrupt).
- * val[63:56] == 1: val[55:0] is a delivery PCI INTx line, as follows:
- *                  Domain = val[47:32], Bus  = val[31:16],
- *                  DevFn  = val[15: 8], IntX = val[ 1: 0]
- * val[63:56] == 2: val[7:0] is a vector number, check for
- *                  XENFEAT_hvm_callback_vector to know if this delivery
- *                  method is available.
+ *
  * If val == 0 then CPU0 event-channel notifications are not delivered.
+ * If val != 0, val[63:56] encodes the type, as follows:
+ */
+
+#define HVM_PARAM_CALLBACK_TYPE_GSI      0
+/*
+ * val[55:0] is a delivery GSI.  GSI 0 cannot be used, as it aliases val == 0,
+ * and disables all notifications.
+ */
+
+#define HVM_PARAM_CALLBACK_TYPE_PCI_INTX 1
+/*
+ * val[55:0] is a delivery PCI INTx line:
+ * Domain = val[47:32], Bus = val[31:16] DevFn = val[15:8], IntX = val[1:0]
+ */
+
+#define HVM_PARAM_CALLBACK_TYPE_VECTOR   2
+/*
+ * val[7:0] is a vector number.  Check for XENFEAT_hvm_callback_vector to know
+ * if this delivery method is available.
  */
-#define HVM_PARAM_CALLBACK_IRQ 0
 
 /*
  * These are not used by Xen. They are here for convenience of HVM-guest
--
generated by git-patchbot for /home/xen/git/xen.git#master

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