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virtio: core: vq reset feature negotation support
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>
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@ -40,7 +40,9 @@
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#include "hw/virtio/virtio-pci.h"
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#include "hw/virtio/virtio-pci.h"
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#include "qom/object_interfaces.h"
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#include "qom/object_interfaces.h"
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GlobalProperty hw_compat_7_1[] = {};
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GlobalProperty hw_compat_7_1[] = {
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{ "virtio-device", "queue_reset", "false" },
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};
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const size_t hw_compat_7_1_len = G_N_ELEMENTS(hw_compat_7_1);
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const size_t hw_compat_7_1_len = G_N_ELEMENTS(hw_compat_7_1);
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GlobalProperty hw_compat_7_0[] = {
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GlobalProperty hw_compat_7_0[] = {
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@ -313,7 +313,9 @@ typedef struct VirtIORNGConf VirtIORNGConf;
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DEFINE_PROP_BIT64("iommu_platform", _state, _field, \
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DEFINE_PROP_BIT64("iommu_platform", _state, _field, \
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VIRTIO_F_IOMMU_PLATFORM, false), \
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VIRTIO_F_IOMMU_PLATFORM, false), \
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DEFINE_PROP_BIT64("packed", _state, _field, \
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DEFINE_PROP_BIT64("packed", _state, _field, \
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VIRTIO_F_RING_PACKED, false)
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VIRTIO_F_RING_PACKED, false), \
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DEFINE_PROP_BIT64("queue_reset", _state, _field, \
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VIRTIO_F_RING_RESET, true)
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hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n);
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hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n);
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bool virtio_queue_enabled_legacy(VirtIODevice *vdev, int n);
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bool virtio_queue_enabled_legacy(VirtIODevice *vdev, int n);
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