mirror of https://github.com/proxmox/mirror_qemu
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 <kraxel@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20240409105537.18308-2-philmd@linaro.org>
(cherry picked from commit ec0504b989
)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
parent
390da29ce5
commit
eb546a3f49
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@ -4145,3 +4145,13 @@ static void virtio_register_types(void)
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}
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type_init(virtio_register_types)
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QEMUBH *virtio_bh_new_guarded_full(DeviceState *dev,
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QEMUBHFunc *cb, void *opaque,
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const char *name)
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{
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DeviceState *transport = qdev_get_parent_bus(dev)->parent;
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return qemu_bh_new_full(cb, opaque, name,
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&transport->mem_reentrancy_guard);
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}
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@ -22,6 +22,7 @@
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#include "standard-headers/linux/virtio_config.h"
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#include "standard-headers/linux/virtio_ring.h"
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#include "qom/object.h"
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#include "block/aio.h"
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/*
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* A guest should never accept this. It implies negotiation is broken
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@ -508,4 +509,10 @@ static inline bool virtio_device_disabled(VirtIODevice *vdev)
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bool virtio_legacy_allowed(VirtIODevice *vdev);
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bool virtio_legacy_check_disabled(VirtIODevice *vdev);
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QEMUBH *virtio_bh_new_guarded_full(DeviceState *dev,
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QEMUBHFunc *cb, void *opaque,
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const char *name);
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#define virtio_bh_new_guarded(dev, cb, opaque) \
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virtio_bh_new_guarded_full((dev), (cb), (opaque), (stringify(cb)))
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#endif
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