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[Qemu-devel] [PATCH] spice: Disallow use of gl + TCP port

From: Christophe Fergeau
Subject: [Qemu-devel] [PATCH] spice: Disallow use of gl + TCP port
Date: Mon, 14 Mar 2016 12:41:12 +0100

Currently, virgl support has to go through a local unix socket, trying
to connect to a VM using -spice gl through spice://localhost:5900 will
only result in a black screen.
This commit errors out when the user tries to start a VM with both GL
support and a port/tls-port set.
This would fit better in spice-server, but currently QEMU does not call
into spice-server when parsing 'gl' on its command line, so we have to
do this check in QEMU instead.

Signed-off-by: Christophe Fergeau <address@hidden>
 ui/spice-core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ui/spice-core.c b/ui/spice-core.c
index 7987a4e..94f3236 100644
--- a/ui/spice-core.c
+++ b/ui/spice-core.c
@@ -844,6 +844,10 @@ void qemu_spice_init(void)
     if (qemu_opt_get_bool(opts, "gl", 0)) {
+        if ((port != 0) || (tls_port != 0)) {
+            error_report("SPICE GL support is local-only for now and 
incompatible with -spice port/tls-port");
+            exit(1);
+        }
         if (egl_rendernode_init() == 0) {
             display_opengl = 1;

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