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virtio-iommu: Add notify_flag_changed() memory region callback

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Add notify_flag_changed() to notice when memory listeners are added and
removed.

Acked-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Bharat Bhushan <bbhushan2@marvell.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Message-Id: <20201030180510.747225-7-jean-philippe@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Bharat Bhushan 2020-10-30 19:05:06 +01:00 committed by Michael S. Tsirkin
parent 308e5e1b5f
commit 6978bfaa68
2 changed files with 16 additions and 0 deletions
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2
hw/virtio/trace-events
View File

@ -109,6 +109,8 @@ virtio_iommu_fill_resv_property(uint32_t devid, uint8_t subtype, uint64_t start,
virtio_iommu_notify_map(const char *name, uint64_t virt_start, uint64_t virt_end, uint64_t phys_start, uint32_t flags) "mr=%s virt_start=0x%"PRIx64" virt_end=0x%"PRIx64" phys_start=0x%"PRIx64" flags=%d"
virtio_iommu_notify_unmap(const char *name, uint64_t virt_start, uint64_t virt_end) "mr=%s virt_start=0x%"PRIx64" virt_end=0x%"PRIx64
virtio_iommu_remap(const char *name, uint64_t virt_start, uint64_t virt_end, uint64_t phys_start) "mr=%s virt_start=0x%"PRIx64" virt_end=0x%"PRIx64" phys_start=0x%"PRIx64
virtio_iommu_notify_flag_add(const char *name) "add notifier to mr %s"
virtio_iommu_notify_flag_del(const char *name) "del notifier from mr %s"
# virtio-mem.c
virtio_mem_send_response(uint16_t type) "type=%" PRIu16

14
hw/virtio/virtio-iommu.c
View File

@ -886,6 +886,19 @@ unlock:
qemu_mutex_unlock(&s->mutex);
}
static int virtio_iommu_notify_flag_changed(IOMMUMemoryRegion *iommu_mr,
IOMMUNotifierFlag old,
IOMMUNotifierFlag new,
Error **errp)
{
if (old == IOMMU_NOTIFIER_NONE) {
trace_virtio_iommu_notify_flag_add(iommu_mr->parent_obj.name);
} else if (new == IOMMU_NOTIFIER_NONE) {
trace_virtio_iommu_notify_flag_del(iommu_mr->parent_obj.name);
}
return 0;
}
static void virtio_iommu_device_realize(DeviceState *dev, Error **errp)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
@ -1116,6 +1129,7 @@ static void virtio_iommu_memory_region_class_init(ObjectClass *klass,
imrc->translate = virtio_iommu_translate;
imrc->replay = virtio_iommu_replay;
imrc->notify_flag_changed = virtio_iommu_notify_flag_changed;
}
static const TypeInfo virtio_iommu_info = {