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From 2906f8df3c5e915a3dc05a705b87990211f114b5 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
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Date: Thu, 15 Dec 2022 12:31:34 +0100
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Subject: [PATCH 02/14] vhost: set SVQ device call handler at SVQ start
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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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RH-Author: Eugenio Pérez <eperezma@redhat.com>
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RH-MergeRequest: 136: vDPA ASID support in Qemu
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RH-Bugzilla: 2104412
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: Cindy Lu <lulu@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Commit: [2/13] ad90a6cc5c71b70d705904433d5a986e8fedb924 (eperezmartin/qemu-kvm)
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By the end of this series CVQ is shadowed as long as the features
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support it.
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Since we don't know at the beginning of qemu running if this is
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supported, move the event notifier handler setting to the start of the
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SVQ, instead of the start of qemu run. This will avoid to create them if
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the device does not support SVQ.
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Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
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Acked-by: Jason Wang <jasowang@redhat.com>
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Message-Id: <20221215113144.322011-3-eperezma@redhat.com>
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Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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(cherry picked from commit 20e7412bfd63c68f1798fbdb799aedb7e05fee88)
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---
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hw/virtio/vhost-shadow-virtqueue.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/hw/virtio/vhost-shadow-virtqueue.c b/hw/virtio/vhost-shadow-virtqueue.c
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index 5bd14cad96..264ddc166d 100644
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--- a/hw/virtio/vhost-shadow-virtqueue.c
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+++ b/hw/virtio/vhost-shadow-virtqueue.c
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@@ -648,6 +648,7 @@ void vhost_svq_start(VhostShadowVirtqueue *svq, VirtIODevice *vdev,
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{
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size_t desc_size, driver_size, device_size;
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+ event_notifier_set_handler(&svq->hdev_call, vhost_svq_handle_call);
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svq->next_guest_avail_elem = NULL;
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svq->shadow_avail_idx = 0;
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svq->shadow_used_idx = 0;
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@@ -704,6 +705,7 @@ void vhost_svq_stop(VhostShadowVirtqueue *svq)
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g_free(svq->desc_state);
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qemu_vfree(svq->vring.desc);
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qemu_vfree(svq->vring.used);
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+ event_notifier_set_handler(&svq->hdev_call, NULL);
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}
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/**
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@@ -740,7 +742,6 @@ VhostShadowVirtqueue *vhost_svq_new(VhostIOVATree *iova_tree,
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}
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event_notifier_init_fd(&svq->svq_kick, VHOST_FILE_UNBIND);
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- event_notifier_set_handler(&svq->hdev_call, vhost_svq_handle_call);
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svq->iova_tree = iova_tree;
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svq->ops = ops;
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svq->ops_opaque = ops_opaque;
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@@ -763,7 +764,6 @@ void vhost_svq_free(gpointer pvq)
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VhostShadowVirtqueue *vq = pvq;
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vhost_svq_stop(vq);
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event_notifier_cleanup(&vq->hdev_kick);
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- event_notifier_set_handler(&vq->hdev_call, NULL);
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event_notifier_cleanup(&vq->hdev_call);
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g_free(vq);
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}
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--
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2.31.1
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