[libvirt] [PATCH] qemu: Support chardevs with ARM virt machines

[Christoffer Dall]

The function to check if -chardev is supported by QEMU was written a
long time ago, where adding chardevs did not make sense on the fixed ARM
platforms.  Since then, we now have a general purpose virt platform,
which should support plugging in any device over PCIe which is supported
in a similar fashion on x86.

Signed-off-by: Christoffer Dall <cdall at linaro.org>
---
 src/qemu/qemu_capabilities.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 7f22492..1348af7 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -5507,6 +5507,11 @@ virQEMUCapsSupportsChardev(const virDomainDef *def,
     if ((def->os.arch != VIR_ARCH_ARMV7L) && (def->os.arch != VIR_ARCH_AARCH64))
         return true;
 
+    /* The virt machine has a PCIe bus and allows plugging in the same type of
+     * devices as x86 systems do on a PCIe bus. */
+    if (qemuDomainIsVirt(def))
+        return true;
+
     /* This may not be true for all ARM machine types, but at least
      * the only supported non-virtio serial devices of vexpress and versatile
      * don't have the -chardev property wired up. */
-- 
2.9.0