From 3735895ad5697b52f7af90bb2e37d5f792b01072 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 4 Apr 2024 20:56:11 +0200 Subject: [PATCH] hw/virtio: Introduce virtio_bh_new_guarded() helper MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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> Signed-off-by: liuxiangdong --- hw/virtio/virtio.c | 10 ++++++++++ include/hw/virtio/virtio.h | 8 ++++++++ 2 files changed, 18 insertions(+) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 79c2dcf54a..cd6757ba98 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -2850,3 +2850,13 @@ 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 f9f62370e9..80f03e5ac9 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -21,6 +21,7 @@ #include "qemu/event_notifier.h" #include "standard-headers/linux/virtio_config.h" #include "standard-headers/linux/virtio_ring.h" +#include "block/aio.h" /* A guest should never accept this. It implies negotiation is broken. */ #define VIRTIO_F_BAD_FEATURE 30 @@ -378,4 +379,11 @@ static inline void virtio_set_started(VirtIODevice *vdev, bool started) vdev->started = started; } } + +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 -- 2.27.0