Hello,
This is v4 patchset to increase number of virtual functions for NVMe SR-IOV.
Please consider the following change notes per version.
This patchset has been tested with the following simple script more than
127 VFs.
-device nvme-subsys,id=subsys0 \
-device ioh3420,id=rp2,multifunction=on,chassis=12 \
-device
nvme,serial=foo,id=nvme0,bus=rp2,subsys=subsys0,mdts=9,msix_qsize=130,max_ioqpairs=260,sriov_max_vfs=129,sriov_vq_flexible=258,sriov_vi_flexible=129
\
$ cat nvme-enable-vfs.sh
#!/bin/bash
nr_vfs=129
for (( i=1; i<=$nr_vfs; i++ ))
do
nvme virt-mgmt /dev/nvme0 -c $i -r 0 -a 8 -n 2
nvme virt-mgmt /dev/nvme0 -c $i -r 1 -a 8 -n 1
done
bdf="0000:01:00.0"
sysfs="/sys/bus/pci/devices/$bdf"
nvme="/sys/bus/pci/drivers/nvme"
echo 0 > $sysfs/sriov_drivers_autoprobe
echo $nr_vfs > $sysfs/sriov_numvfs
for (( i=1; i<=$nr_vfs; i++ ))
do
nvme virt-mgmt /dev/nvme0 -c $i -a 9
echo "nvme" > $sysfs/virtfn$(($i-1))/driver_override
bdf="$(basename $(readlink $sysfs/virtfn$(($i-1))))"
echo $bdf > $nvme/bind
done
Thanks,
v4:
- Rebased on the latest master.
- Update n->params.sriov_max_vfs to uint16_t as per spec.
v3:
- Replace [3/4] patch with one allocating a dyanmic array of secondary
controller list rather than a static array with a fixed size of
maximum number of VF to support (Suggested by Klaus).
v2:
- Added [2/4] commit to fix crash due to entry overflow
Minwoo Im (4):
hw/nvme: add Identify Endurance Group List
hw/nvme: separate identify data for sec. ctrl list
hw/nvme: Allocate sec-ctrl-list as a dynamic array
hw/nvme: Expand VI/VQ resource to uint32
hw/nvme/ctrl.c | 59 +++++++++++++++++++++++++++-----------------
hw/nvme/nvme.h | 19 +++++++-------
hw/nvme/subsys.c | 10 +++++---
include/block/nvme.h | 1 +
4 files changed, 54 insertions(+), 35 deletions(-)
--
2.34.1
