69 lines
2.5 KiB
Diff
69 lines
2.5 KiB
Diff
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From 53203b7c0c933bd0ce07c58bdd7113e2fba62fa3 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <philmd@linaro.org>
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Date: Thu, 4 Apr 2024 20:56:11 +0200
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Subject: [PATCH] hw/virtio: Introduce virtio_bh_new_guarded() helper
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Introduce virtio_bh_new_guarded(), similar to qemu_bh_new_guarded()
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but using the transport memory guard, instead of the device one
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(there can only be one virtio device per virtio bus).
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Inspired-by: Gerd Hoffmann <kraxel@redhat.com>
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Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
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Acked-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
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Message-Id: <20240409105537.18308-2-philmd@linaro.org>
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Signed-off-by: liuxiangdong <liuxiangdong5@huawei.com>
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---
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hw/virtio/virtio.c | 10 ++++++++++
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include/hw/virtio/virtio.h | 7 +++++++
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2 files changed, 17 insertions(+)
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diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
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index e3f392fc59..80156bfbd5 100644
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--- a/hw/virtio/virtio.c
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+++ b/hw/virtio/virtio.c
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@@ -3960,3 +3960,13 @@ static void virtio_register_types(void)
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}
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type_init(virtio_register_types)
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+
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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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+
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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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diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
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index 43509b33ff..4cc278f12c 100644
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--- a/include/hw/virtio/virtio.h
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+++ b/include/hw/virtio/virtio.h
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@@ -23,6 +23,7 @@
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#include "standard-headers/linux/virtio_ring.h"
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#include "qom/object.h"
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#include "hw/virtio/vhost.h"
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+#include "block/aio.h"
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/* A guest should never accept this. It implies negotiation is broken. */
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#define VIRTIO_F_BAD_FEATURE 30
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@@ -409,4 +410,10 @@ 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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+
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#endif
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--
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2.27.0
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