Public bug reported:
There exists a bug with Chelsio NICs T4 that causes the following error:
kvm: -device vfio-
pci,host=0000:83:00.7,id=hostpci1.7,bus=pci.0,addr=0x11.7: vfio
0000:83:00.7: hardware reports invalid configuration, MSIX PBA outside
of specified BAR
I was working with a downstream Proxmox developer to try to fix this
issue, and they provided me with the following change to make from line
1484 of hw/vfio/pci.c:
static void vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp)
* is 0x1000, so we hard code that here.
*/
if (vdev->vendor_id == PCI_VENDOR_ID_CHELSIO &&
- (vdev->device_id & 0xff00) == 0x5800) {
+ ((vdev->device_id & 0xff00) == 0x5800 ||
+ (vdev->device_id & 0xff00) == 0x1425)) {
msix->pba_offset = 0x1000;
} else if (vdev->msix_relo == OFF_AUTOPCIBAR_OFF) {
error_setg(errp, "hardware reports invalid configuration, "
However, I found that this did not fix the issue, so the bug appears to
work differently than the one that was present on the T5 NICs which has
already been patched. I have attached the output of my lspci -nnkvv
** Affects: qemu
Importance: Undecided
Status: New
** Tags: chelsio t4
** Attachment added: "Full lspci -nnkvv output"
https://bugs.launchpad.net/bugs/1894869/+attachment/5408718/+files/lspci.txt
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https://bugs.launchpad.net/bugs/1894869
Title:
Chelsio T4 has old MSIX PBA offset bug
Status in QEMU:
New
Bug description:
There exists a bug with Chelsio NICs T4 that causes the following
error:
kvm: -device vfio-
pci,host=0000:83:00.7,id=hostpci1.7,bus=pci.0,addr=0x11.7: vfio
0000:83:00.7: hardware reports invalid configuration, MSIX PBA outside
of specified BAR
I was working with a downstream Proxmox developer to try to fix this
issue, and they provided me with the following change to make from
line 1484 of hw/vfio/pci.c:
static void vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp)
* is 0x1000, so we hard code that here.
*/
if (vdev->vendor_id == PCI_VENDOR_ID_CHELSIO &&
- (vdev->device_id & 0xff00) == 0x5800) {
+ ((vdev->device_id & 0xff00) == 0x5800 ||
+ (vdev->device_id & 0xff00) == 0x1425)) {
msix->pba_offset = 0x1000;
} else if (vdev->msix_relo == OFF_AUTOPCIBAR_OFF) {
error_setg(errp, "hardware reports invalid configuration, "
However, I found that this did not fix the issue, so the bug appears
to work differently than the one that was present on the T5 NICs which
has already been patched. I have attached the output of my lspci
-nnkvv
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