From: Philippe Mathieu-Daudé Date: Thu, 4 Apr 2024 18:56:11 +0000 (+0200) Subject: hw/virtio: Introduce virtio_bh_new_guarded() helper X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ec0504b989ca61e03636384d3602b7bf07ffe4da;p=qemu.git hw/virtio: Introduce virtio_bh_new_guarded() helper 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 Reviewed-by: Gerd Hoffmann Acked-by: Michael S. Tsirkin Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Michael S. Tsirkin Message-Id: <20240409105537.18308-2-philmd@linaro.org> --- 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); +} 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