From f49a5e3bf4c275ddb8a60274d6ab941b2f99f553 Mon Sep 17 00:00:00 2001
From: Yi Min Zhao <zyimin@linux.ibm.com>
Date: Thu, 8 Nov 2018 19:00:22 +0800
Subject: [PATCH] qemu: Enable PCI multi bus for S390 guests
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QEMU on s390 supports PCI multibus since forever.

Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
---
 src/qemu/qemu_capabilities.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index eed27f6878..8294e1b4a8 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -1702,6 +1702,10 @@ bool virQEMUCapsHasPCIMultiBus(virQEMUCapsPtr qemuCaps,
         return false;
     }
 
+    /* S390 supports PCI-multibus. */
+    if (ARCH_IS_S390(def->os.arch))
+        return true;
+
     /* If ARM 'virt' supports PCI, it supports multibus.
      * No extra conditions here for simplicity.
      */