diff mbox series

[PULL,40/86] virtio: core: vq reset feature negotation support

Message ID 20221031124928.128475-41-mst@redhat.com (mailing list archive)
State New, archived
Headers show
Series [PULL,01/86] bios-tables-test: do not ignore allowed diff list | expand

Commit Message

Michael S. Tsirkin Oct. 31, 2022, 12:52 p.m. UTC 
From: Kangjie Xu <kangjie.xu@linux.alibaba.com>

A a new command line parameter "queue_reset" is added.

Meanwhile, the vq reset feature is disabled for pre-7.2 machines.

Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221017092558.111082-5-xuanzhuo@linux.alibaba.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 include/hw/virtio/virtio.h | 4 +++-
 hw/core/machine.c          | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 5cd7861aeb..18a8920cc0 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -313,7 +313,9 @@  typedef struct VirtIORNGConf VirtIORNGConf;
     DEFINE_PROP_BIT64("iommu_platform", _state, _field, \
                       VIRTIO_F_IOMMU_PLATFORM, false), \
     DEFINE_PROP_BIT64("packed", _state, _field, \
-                      VIRTIO_F_RING_PACKED, false)
+                      VIRTIO_F_RING_PACKED, false), \
+    DEFINE_PROP_BIT64("queue_reset", _state, _field, \
+                      VIRTIO_F_RING_RESET, true)
 
 hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n);
 bool virtio_queue_enabled_legacy(VirtIODevice *vdev, int n);
diff --git a/hw/core/machine.c b/hw/core/machine.c
index aa520e74a8..907fa78ff0 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -40,7 +40,9 @@ 
 #include "hw/virtio/virtio-pci.h"
 #include "qom/object_interfaces.h"
 
-GlobalProperty hw_compat_7_1[] = {};
+GlobalProperty hw_compat_7_1[] = {
+    { "virtio-device", "queue_reset", "false" },
+};
 const size_t hw_compat_7_1_len = G_N_ELEMENTS(hw_compat_7_1);
 
 GlobalProperty hw_compat_7_0[] = {