[PATCH v4 0/4] hw/nvme: FDP and SR-IOV enhancements

[Minwoo Im]

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