From 2c4fb8fc19d1dd6ef8fafdfb1e48998020a368cd Mon Sep 17 00:00:00 2001

Message-Id: <2c4fb8fc19d1dd6ef8fafdfb1e48998020a368cd@dist-git>

From: Yi Min Zhao <zyimin@linux.ibm.com>

Date: Mon, 8 Apr 2019 10:57:20 +0200

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>

(cherry picked from commit f49a5e3bf4c275ddb8a60274d6ab941b2f99f553)

https://bugzilla.redhat.com/show_bug.cgi?id=1508149

Conflicts:

  * src/qemu/qemu_capabilities.c

    + context

      - missing fa95035bd4c9

Signed-off-by: Andrea Bolognani <abologna@redhat.com>

Message-Id: <20190408085732.28684-4-abologna@redhat.com>

Reviewed-by: Laine Stump <laine@redhat.com>

Reviewed-by: Ján Tomko <jtomko@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 8ca53abf2b..5539d168cd 100644

--- a/src/qemu/qemu_capabilities.c

+++ b/src/qemu/qemu_capabilities.c

@@ -1803,6 +1803,10 @@ bool virQEMUCapsHasPCIMultiBus(virQEMUCapsPtr qemuCaps,

         return false;

     }

+    /* S390 supports PCI-multibus. */

+    if (ARCH_IS_S390(def->os.arch))

+        return true;

+

     /* If 'virt' supports PCI, it supports multibus.

      * No extra conditions here for simplicity.

      */

-- 

2.22.0