[dpdk-users] Hard Crash with X710 and Pktgen
James Bensley
jwbensley at gmail.com
Wed Nov 15 18:22:18 CET 2017
On 14 November 2017 at 10:59, Johnson, Brian <brian.johnson at intel.com> wrote:
> Do you have Intel VT-d enabled in the BIOS and intel_iommu=on iommu=pt in
> grub?
...
> Once the system boots up, check the contents of /sys/kernel/iommu_groups/
> directory. If it is non-empty, you have successfully set up IOMMU.
Hi Brian,
Many thanks for your response!
$ ls /sys/kernel/iommu_groups/
0 1 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 24
25 26 27 28 29 3 30 31 32 33 34 35 36 37 38 39 4 40
41 5 6 7 8 9
There is "stuff" in there so, looks good to me.
$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-4.13.12-1.el7.elrepo.x86_64
root=UUID=e5b08dc0-3ea6-4259-82ab-820dee91fa52 ro intel_pstate=disable
iommu=pt intel_iommu=on default_hugepagesz=1G hugepagesz=1G
hugepages=4 crashkernel=auto rhgb quiet
$ dmesg | grep -i IOMMU
[ 0.000000] DMAR: IOMMU enabled
VT-x is enabled:
$ grep -m 1 -o "vmx" /proc/cpuinfo
vmx
VT-d is enabled:
$ dmesg | grep -i DMAR
[ 0.000000] DMAR: IOMMU enabled
Cheers,
James.
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