cryptospore / rpms / qemu-kvm

Forked from rpms/qemu-kvm 2 years ago
Clone

Blame SOURCES/kvm-virtio-add-ability-to-delete-vq-through-a-pointer.patch

902636
From b395ad369278d0923a590975fabbb99ec7716c6b Mon Sep 17 00:00:00 2001
016a62
From: Julia Suvorova <jusual@redhat.com>
902636
Date: Wed, 19 Feb 2020 21:34:28 +0000
902636
Subject: [PATCH 4/7] virtio: add ability to delete vq through a pointer
902636
MIME-Version: 1.0
902636
Content-Type: text/plain; charset=UTF-8
902636
Content-Transfer-Encoding: 8bit
016a62
016a62
RH-Author: Julia Suvorova <jusual@redhat.com>
902636
Message-id: <20200219213431.11913-2-jusual@redhat.com>
902636
Patchwork-id: 93980
902636
O-Subject: [RHEL-AV-8.2.0 qemu-kvm PATCH 1/4] virtio: add ability to delete vq through a pointer
902636
Bugzilla: 1791590
902636
RH-Acked-by: Danilo de Paula <ddepaula@redhat.com>
902636
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
902636
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
016a62
RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
016a62
016a62
From: "Michael S. Tsirkin" <mst@redhat.com>
016a62
016a62
Devices tend to maintain vq pointers, allow deleting them trough a vq pointer.
016a62
016a62
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
016a62
Reviewed-by: David Hildenbrand <david@redhat.com>
016a62
Reviewed-by: David Hildenbrand <david@redhat.com>
016a62
(cherry picked from commit 722f8c51d8af223751dfb1d02de40043e8ba067e)
016a62
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
016a62
---
902636
 hw/virtio/virtio.c         | 15 ++++++++++-----
016a62
 include/hw/virtio/virtio.h |  2 ++
902636
 2 files changed, 12 insertions(+), 5 deletions(-)
016a62
016a62
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
902636
index 3211135..d63a369 100644
016a62
--- a/hw/virtio/virtio.c
016a62
+++ b/hw/virtio/virtio.c
902636
@@ -2335,17 +2335,22 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size,
016a62
     return &vdev->vq[i];
016a62
 }
016a62
 
016a62
+void virtio_delete_queue(VirtQueue *vq)
016a62
+{
016a62
+    vq->vring.num = 0;
016a62
+    vq->vring.num_default = 0;
016a62
+    vq->handle_output = NULL;
016a62
+    vq->handle_aio_output = NULL;
902636
+    g_free(vq->used_elems);
016a62
+}
016a62
+
016a62
 void virtio_del_queue(VirtIODevice *vdev, int n)
016a62
 {
016a62
     if (n < 0 || n >= VIRTIO_QUEUE_MAX) {
016a62
         abort();
016a62
     }
016a62
 
016a62
-    vdev->vq[n].vring.num = 0;
016a62
-    vdev->vq[n].vring.num_default = 0;
016a62
-    vdev->vq[n].handle_output = NULL;
016a62
-    vdev->vq[n].handle_aio_output = NULL;
902636
-    g_free(vdev->vq[n].used_elems);
016a62
+    virtio_delete_queue(&vdev->vq[n]);
016a62
 }
016a62
 
016a62
 static void virtio_set_isr(VirtIODevice *vdev, int value)
016a62
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
902636
index 6a20442..91167f6 100644
016a62
--- a/include/hw/virtio/virtio.h
016a62
+++ b/include/hw/virtio/virtio.h
902636
@@ -183,6 +183,8 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size,
016a62
 
016a62
 void virtio_del_queue(VirtIODevice *vdev, int n);
016a62
 
016a62
+void virtio_delete_queue(VirtQueue *vq);
016a62
+
016a62
 void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem,
016a62
                     unsigned int len);
016a62
 void virtqueue_flush(VirtQueue *vq, unsigned int count);
016a62
-- 
016a62
1.8.3.1
016a62