Re: [dpdk-dev] [PATCH] eal: forcing IOVA as PA in ppc

[David Marchand <david.marchand@redhat.com>]

On Wed, Jul 31, 2019 at 9:23 PM David Christensen
<drc@linux.vnet.ibm.com> wrote:
>
> On 7/31/19 3:58 AM, David Marchand wrote:
> > --log-level lib.*:debug
>
> Here's the output from my Power 9 system running 19.08-RC2 (I'm not
> using VFIO since I have an MLX5 adapter).
>
> sudo -E LD_LIBRARY_PATH=/home/davec/src/dpdk/build/lib
> /home/davec/src/dpdk/build/app/testpmd --log-level lib.\*:debug -w
> 0000:01:00.0 -w 0000:01:00.1 -l 4,8-79 -n 4  -- --rxq=32 --rxd=1024
> --txq=32 --txd=4096 --nb-cores=64 -i -a --numa --forward-mode=rxonly
> EAL: Detected lcore 0 as core 0 on socket 0
> <snip> ...
> EAL: Detected lcore 159 as core 2140 on socket 8
> EAL: Support maximum 1536 logical core(s) by configuration.
> EAL: Detected 160 lcore(s)
> EAL: Detected 2 NUMA nodes
> EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
> EAL: Module /sys/module/vfio_pci not found! error 2 (No such file or
> directory)
> EAL: VFIO PCI modules not loaded
> EAL: DPAA Bus not present. Skipping.
> EAL: Bus pci wants IOVA as 'DC'

Ok, I think I understand now.

Can you try this hunk ?

diff --git a/drivers/bus/pci/pci_common.c b/drivers/bus/pci/pci_common.c
index 9794552..6d3b553 100644
--- a/drivers/bus/pci/pci_common.c
+++ b/drivers/bus/pci/pci_common.c
@@ -620,9 +620,6 @@ rte_pci_get_iommu_class(void)
        FOREACH_DEVICE_ON_PCIBUS(dev) {
                if (pci_ignore_device(dev))
                        continue;
-               if (dev->kdrv == RTE_KDRV_UNKNOWN ||
-                   dev->kdrv == RTE_KDRV_NONE)
-                       continue;
                FOREACH_DRIVER_ON_PCIBUS(drv) {
                        enum rte_iova_mode dev_iova_mode;




-- 
David Marchand