Introduce virtio_bh_new_guarded(), similar to qemu_bh_new_guarded()
but using the transport memory guard, instead of the device one
(there can only be one virtio device per virtio bus).
Inspired-by: Gerd Hoffmann <kra...@redhat.com>
Reviewed-by: Gerd Hoffmann <kra...@redhat.com>
Acked-by: Michael S. Tsirkin <m...@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
Reviewed-by: Michael S. Tsirkin <m...@redhat.com>
Message-Id: <20240409105537.18308-2-phi...@linaro.org>
---
include/hw/virtio/virtio.h | 7 +++++++
hw/virtio/virtio.c | 10 ++++++++++
2 files changed, 17 insertions(+)
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index c8f72850bc..7d5ffdc145 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -22,6 +22,7 @@
#include "standard-headers/linux/virtio_config.h"
#include "standard-headers/linux/virtio_ring.h"
#include "qom/object.h"
+#include "block/aio.h"
/*
* A guest should never accept this. It implies negotiation is broken
@@ -508,4 +509,10 @@ static inline bool virtio_device_disabled(VirtIODevice
*vdev)
bool virtio_legacy_allowed(VirtIODevice *vdev);
bool virtio_legacy_check_disabled(VirtIODevice *vdev);
+QEMUBH *virtio_bh_new_guarded_full(DeviceState *dev,
+ QEMUBHFunc *cb, void *opaque,
+ const char *name);
+#define virtio_bh_new_guarded(dev, cb, opaque) \
+ virtio_bh_new_guarded_full((dev), (cb), (opaque), (stringify(cb)))
+
#endif
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index c5bedca848..871674f9be 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -4145,3 +4145,13 @@ static void virtio_register_types(void)
}
type_init(virtio_register_types)
+
+QEMUBH *virtio_bh_new_guarded_full(DeviceState *dev,
+ QEMUBHFunc *cb, void *opaque,
+ const char *name)
+{
+ DeviceState *transport = qdev_get_parent_bus(dev)->parent;
+
+ return qemu_bh_new_full(cb, opaque, name,
+ &transport->mem_reentrancy_guard);
+}
--
2.41.0
