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| author | Gautam Dawar <gautam.dawar@xilinx.com> | 2022-03-30 21:03:46 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-05-31 19:44:27 +0300 |
| commit | db9adcbf4286ad1c1fca091a870db6e49bb0df07 (patch) | |
| tree | 2d2c265ee15bf7ddf4db3adf8083f136213ffb36 /drivers/vdpa/virtio_pci | |
| parent | d4821902e43453b85b31329441a9f6ac071228a8 (diff) | |
| download | linux-db9adcbf4286ad1c1fca091a870db6e49bb0df07.tar.xz | |
vdpa: multiple address spaces support
This patches introduces the multiple address spaces support for vDPA
device. This idea is to identify a specific address space via an
dedicated identifier - ASID.
During vDPA device allocation, vDPA device driver needs to report the
number of address spaces supported by the device then the DMA mapping
ops of the vDPA device needs to be extended to support ASID.
This helps to isolate the environments for the virtqueue that will not
be assigned directly. E.g in the case of virtio-net, the control
virtqueue will not be assigned directly to guest.
As a start, simply claim 1 virtqueue groups and 1 address spaces for
all vDPA devices. And vhost-vDPA will simply reject the device with
more than 1 virtqueue groups or address spaces.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Gautam Dawar <gdawar@xilinx.com>
Message-Id: <20220330180436.24644-7-gdawar@xilinx.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa/virtio_pci')
| -rw-r--r-- | drivers/vdpa/virtio_pci/vp_vdpa.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vdpa/virtio_pci/vp_vdpa.c b/drivers/vdpa/virtio_pci/vp_vdpa.c index e18dfe993901..35acba0e8d6d 100644 --- a/drivers/vdpa/virtio_pci/vp_vdpa.c +++ b/drivers/vdpa/virtio_pci/vp_vdpa.c @@ -466,7 +466,7 @@ static int vp_vdpa_probe(struct pci_dev *pdev, const struct pci_device_id *id) return ret; vp_vdpa = vdpa_alloc_device(struct vp_vdpa, vdpa, - dev, &vp_vdpa_ops, 1, NULL, false); + dev, &vp_vdpa_ops, 1, 1, NULL, false); if (IS_ERR(vp_vdpa)) { dev_err(dev, "vp_vdpa: Failed to allocate vDPA structure\n"); return PTR_ERR(vp_vdpa); |