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s390x: add have_virtio_ccw 

Introduce a symbol which can be used to prevent ccw modules
being loaded into system emulators without ccw support.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Tested-by: Halil Pasic <pasic@linux.ibm.com>
Message-Id: <20210317095622.2839895-3-kraxel@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2021-03-17 10:56:21 +01:00
parent d4c603d7be
commit 2dd9d8cfb4
2 changed files with 7 additions and 0 deletions
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2
hw/s390x/virtio-ccw.c
View File

@ -35,6 +35,8 @@
#define NR_CLASSIC_INDICATOR_BITS 64
bool have_virtio_ccw = true;
static int virtio_ccw_dev_post_load(void *opaque, int version_id)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(opaque);

5
hw/s390x/virtio-ccw.h
View File

@ -63,6 +63,11 @@ typedef struct VirtioBusClass VirtioCcwBusClass;
DECLARE_OBJ_CHECKERS(VirtioCcwBusState, VirtioCcwBusClass,
VIRTIO_CCW_BUS, TYPE_VIRTIO_CCW_BUS)
/*
* modules can reference this symbol to avoid being loaded
* into system emulators without ccw support
*/
extern bool have_virtio_ccw;
struct VirtIOCCWDeviceClass {
CCWDeviceClass parent_class;