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| author | Amit Shah <amit.shah@redhat.com> | 2011-02-03 13:05:07 +0530 |
|---|---|---|
| committer | Amit Shah <amit.shah@redhat.com> | 2011-03-21 16:55:11 +0530 |
| commit | 0b8b716d6c43b5a1d4e0293df1c77af4fff21bab (patch) | |
| tree | c09371742388c8fb5121d42ed14216a6c4de6977 /hw/virtio-console.c | |
| parent | 6b331efb733a0f913ddc0b7762a1307dec304061 (diff) | |
| download | qemu-0b8b716d6c43b5a1d4e0293df1c77af4fff21bab.zip qemu-0b8b716d6c43b5a1d4e0293df1c77af4fff21bab.tar.gz qemu-0b8b716d6c43b5a1d4e0293df1c77af4fff21bab.tar.bz2 | |
virtio-serial: Disallow generic ports at id 0
Port 0 is reserved for virtconsole devices for backward compatibility
with the old -virtioconsole (from qemu 0.12) device type.
libvirt prior to commit 8e28c5d40200b4c5d483bd585d237b9d870372e5 used
port 0 for generic ports. libvirt will no longer do that, but disallow
instantiating generic ports at id 0 from qemu as well.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Diffstat (limited to 'hw/virtio-console.c')
| -rw-r--r-- | hw/virtio-console.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/hw/virtio-console.c b/hw/virtio-console.c index c235b27..4440784 100644 --- a/hw/virtio-console.c +++ b/hw/virtio-console.c @@ -11,6 +11,7 @@ */ #include "qemu-char.h" +#include "qemu-error.h" #include "virtio-serial.h" typedef struct VirtConsole { @@ -113,6 +114,14 @@ static int virtserialport_initfn(VirtIOSerialPort *port) { VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port); + if (port->id == 0) { + /* + * Disallow a generic port at id 0, that's reserved for + * console ports. + */ + error_report("Port number 0 on virtio-serial devices reserved for virtconsole devices for backward compatibility."); + return -1; + } return generic_port_init(vcon, port); } |