From a95f99224c08efcf91b4259c34754f69d962bf23 Mon Sep 17 00:00:00 2001
From: Sam Bobroff <sam.bobroff@au1.ibm.com>
Date: Tue, 1 Sep 2015 11:23:34 +1000
Subject: [PATCH] spapr: Add /rtas/ibm,change-msix-capable

QEMU is MSI-X capable and makes it available via ibm,change-msi, so
we should indicate this by adding /rtas/ibm,change-msix-capable to the
device tree.

This is specificed by PAPR.

Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/spapr.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 09962c4f8e..ed0abd8498 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -432,6 +432,10 @@ static void *spapr_create_fdt_skel(hwaddr initrd_base,
     _FDT((fdt_property_cell(fdt, "rtas-event-scan-rate",
                             RTAS_EVENT_SCAN_RATE)));
 
+    if (msi_supported) {
+        _FDT((fdt_property(fdt, "ibm,change-msix-capable", NULL, 0)));
+    }
+
     /*
      * According to PAPR, rtas ibm,os-term does not guarantee a return
      * back to the guest cpu.