<div dir="ltr">Sure, I will submit a patch (it would be a first). Thanks</div> <div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Aug 11, 2023 at 3:30 PM Thomas Monjalon <<a href="mailto:thomas@monjalon.net">thomas@monjalon.net</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Thanks for the info. Do you think it should be written in the vmxnet3 page of the DPDK documentation? If yes, would you like to initiate a patch for review? 11/08/2023 10:43, Igor de Paula: > Hi again, > I got this resolved with VMWARE support so I thought to share it here. > What I originally wanted was to use IOVA-VA on an AMD host. Which didn't > work. I have learned that the ESXI version that supports > virtual IOMMU in AMD hosts (which is a prerequisite to IOVA-VA) is ESXI 7.0 > U1. After updating it worked. On Intel hosts ESXI 6.7 supports it already > as far as I know. > > > On Tue, Jul 25, 2023 at 6:19 PM Varghese, Vipin <<a href="mailto:Vipin.Varghese@amd.com" target="_blank">Vipin.Varghese@amd.com</a>> > wrote: > > > [AMD Official Use Only - General] > > > > Like I said earlier, trying with the Intel host I have on VMWARE, > > specifically Intel(R) Xeon(R) CPU E5-2697A v4 @ 2.60GHz > > With IOMMU enabled, VMXNET3 works with VA as well as PA. > > > > [VV] since ` enable_unsafe_iommu: not enabled` on Intel platform, could > > it be possible the specific version EXSI hypervisor supports the HW IOMMU > > specific to the platform. My suspicion will be in case on AMD platform > > changes for required to enable HW iommu might not be available to specific > > EXSI (hypervior OS) used. > > > > > > > > I am not an expert on virtio_user PMD, but I can check if it will work > > with PA with deferred setting for vmx_net3 PMD are ok? > > > > > > > > *From:* Igor de Paula <<a href="mailto:igordptx@gmail.com" target="_blank">igordptx@gmail.com</a>> > > *Sent:* Tuesday, July 25, 2023 8:42 PM > > *To:* Varghese, Vipin <<a href="mailto:Vipin.Varghese@amd.com" target="_blank">Vipin.Varghese@amd.com</a>> > > *Cc:* Yigit, Ferruh <<a href="mailto:Ferruh.Yigit@amd.com" target="_blank">Ferruh.Yigit@amd.com</a>>; Jochen Behrens < > > <a href="mailto:jbehrens@vmware.com" target="_blank">jbehrens@vmware.com</a>>; Thomas Monjalon <<a href="mailto:thomas@monjalon.net" target="_blank">thomas@monjalon.net</a>>; > > <a href="mailto:users@dpdk.org" target="_blank">users@dpdk.org</a>; Gupta, Nipun <<a href="mailto:Nipun.Gupta@amd.com" target="_blank">Nipun.Gupta@amd.com</a>>; Agarwal, Nikhil < > > <a href="mailto:nikhil.agarwal@amd.com" target="_blank">nikhil.agarwal@amd.com</a>>; Ronak Doshi <<a href="mailto:doshir@vmware.com" target="_blank">doshir@vmware.com</a>>; Immanni, Venkat > > <<a href="mailto:Venkat.Immanni@amd.com" target="_blank">Venkat.Immanni@amd.com</a>>; Chenbo Xia <<a href="mailto:chenbo.xia@intel.com" target="_blank">chenbo.xia@intel.com</a>> > > *Subject:* Re: help > > > > > > > > *Caution:* This message originated from an External Source. Use proper > > caution when opening attachments, clicking links, or responding. > > > > > > > > Well, > > Like I said earlier, trying with the Intel host I have on VMWARE, > > specifically Intel(R) Xeon(R) CPU E5-2697A v4 @ 2.60GHz > > With IOMMU enabled, VMXNET3 works with VA as well as PA. > > Meaning, PA works regardless if IOMMU is enabled or not. From my > > experience anyway. > > That's why I thought that: > > virtio_user needs VA to work. > > For some reason VMXNET3 does not work with VA (only on AMD host). > > > > > > > > > > > > On Tue, Jul 25, 2023 at 4:04 PM Varghese, Vipin <<a href="mailto:Vipin.Varghese@amd.com" target="_blank">Vipin.Varghese@amd.com</a>> > > wrote: > > > > [AMD Official Use Only - General] > > > > > > > > Thanks Igor, > > > > > > > > As suspected the vmx_net3 works with > > > > > > > > 1. Iommu: disabled > > 2. enable_unsafe_iommu: enabled > > 3. dpdk eal iova mode: PA > > > > > > > > as pointed by you in logs, the virtio_user fails as it expects VA too. > > > > > > > > Will check and get back. > > > > > > > > *From:* Igor de Paula <<a href="mailto:igordptx@gmail.com" target="_blank">igordptx@gmail.com</a>> > > *Sent:* Tuesday, July 25, 2023 8:16 PM > > *To:* Yigit, Ferruh <<a href="mailto:Ferruh.Yigit@amd.com" target="_blank">Ferruh.Yigit@amd.com</a>> > > *Cc:* Jochen Behrens <<a href="mailto:jbehrens@vmware.com" target="_blank">jbehrens@vmware.com</a>>; Thomas Monjalon < > > <a href="mailto:thomas@monjalon.net" target="_blank">thomas@monjalon.net</a>>; <a href="mailto:users@dpdk.org" target="_blank">users@dpdk.org</a>; Gupta, Nipun <<a href="mailto:Nipun.Gupta@amd.com" target="_blank">Nipun.Gupta@amd.com</a>>; > > Agarwal, Nikhil <<a href="mailto:nikhil.agarwal@amd.com" target="_blank">nikhil.agarwal@amd.com</a>>; Ronak Doshi <<a href="mailto:doshir@vmware.com" target="_blank">doshir@vmware.com</a>>; > > Immanni, Venkat <<a href="mailto:Venkat.Immanni@amd.com" target="_blank">Venkat.Immanni@amd.com</a>>; Varghese, Vipin < > > <a href="mailto:Vipin.Varghese@amd.com" target="_blank">Vipin.Varghese@amd.com</a>>; Chenbo Xia <<a href="mailto:chenbo.xia@intel.com" target="_blank">chenbo.xia@intel.com</a>> > > *Subject:* Re: help > > > > > > > > *Caution:* This message originated from an External Source. Use proper > > caution when opening attachments, clicking links, or responding. > > > > > > > > Hi, > > Attaching the logs of EAL when trying to run a configuration with > > virtio_user port when IOMMU is > > disabled and enable_unsafe_iommu is enabled. As you can see it forces IOVA > > as PA but the viritui_user needs IOVA as VA. > > I am also attaching the output of dmesg. I am not sure which kernel logs > > you wanted... if there is anything else please let me know.. > > Regarding the ESXI logs, they are HUGE so I will send to you on a separate > > email. > > > > > > > > On Fri, Jul 21, 2023 at 1:14 PM Ferruh Yigit <<a href="mailto:ferruh.yigit@amd.com" target="_blank">ferruh.yigit@amd.com</a>> wrote: > > > > On 7/21/2023 12:39 PM, Igor de Paula wrote: > > > I am trying to use virtio_user for an interface with the > > > kernel: > > <a href="https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html" rel="noreferrer" target="_blank">https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html</a> < > > <a href="https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html" rel="noreferrer" target="_blank">https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html</a>> > > > I think this requires IOVA as va. > > > > > > > I am not sure if virtio-user has IOVA as VA requirement, cc'ed Chenbo, > > he may know better. > > > > Meanwhile can you give a try to 'enable_unsafe_noiommu_mode' and > > '--iova-mode=pa'? > > > > > > > It does work with Intel host and IOMMU > > > enabled. Part of the negotiation when setting it up is getting the IOMMU > > > number so I thought it has to have IOMMU. > > > > > > > Yes, issue looks like related to the IOMMU, and it may be either related > > to HW support, or ESXi iommu driver support, we will check using below > > information you provided. > > > > > I tried disabling IOMMU and enabling enable_unsafe_noiommu flag but > > > again, that didn't work. > > > ESXI version - VMware ESXi, 7.0.0, 16324942 > > > AMD: AMD EPYC 7452 32-Core Processo > > > > > > On an Intel host which worked: Intel(R) Xeon(R) CPU E5-2697A v4 @ 2.60GHz > > > Regarding the logs I will try and attach it soon. > > > > > > > Thanks for info, waiting for logs. > > > > > > > > On Fri, Jul 21, 2023 at 12:21 PM Ferruh Yigit <<a href="mailto:ferruh.yigit@amd.com" target="_blank">ferruh.yigit@amd.com</a> > > > <mailto:<a href="mailto:ferruh.yigit@amd.com" target="_blank">ferruh.yigit@amd.com</a>>> wrote: > > > > > > Hi Igor, > > > > > > VM doesn't have IOMMU, and vmxnet3 requires PA mode, for this can you > > > please try with: > > > - enable 'enable_unsafe_noiommu_mode' flag > > > - Force PA mode via '--iova-mode=pa' eal parameter > > > > > > > > > Also to be able to figure out AMD IOMMU support level, can you please > > > provide: > > > - AMD part number > > > - ESXi/hypervisor version > > > - ESXi & VM kernel logs > > > > > > > > > Thanks, > > > Ferruh > > > > > > On 7/20/2023 5:21 PM, Jochen Behrens wrote: > > > > +Ronak from the ESX team > > > > > > > > > > > > > > > > > > > > > > > > In our usage, we do set amd_iommu=off in the boot command line from > > > > grub. (Or intel_iommu=off for Intel processors.) > > > > > > > > > > > > > > > > Jochen > > > > > > > > > > > > > > > > *From: *Thomas Monjalon <<a href="mailto:thomas@monjalon.net" target="_blank">thomas@monjalon.net</a> > > > <mailto:<a href="mailto:thomas@monjalon.net" target="_blank">thomas@monjalon.net</a>>> > > > > *Date: *Thursday, July 20, 2023 at 6:00 AM > > > > *To: *Igor de Paula <<a href="mailto:igordptx@gmail.com" target="_blank">igordptx@gmail.com</a> <mailto:<a href="mailto:igordptx@gmail.com" target="_blank">igordptx@gmail.com</a> > > >> > > > > *Cc: *<a href="mailto:users@dpdk.org" target="_blank">users@dpdk.org</a> <mailto:<a href="mailto:users@dpdk.org" target="_blank">users@dpdk.org</a>> <<a href="mailto:users@dpdk.org" target="_blank">users@dpdk.org</a> > > > <mailto:<a href="mailto:users@dpdk.org" target="_blank">users@dpdk.org</a>>>, Jochen Behrens > > > > <<a href="mailto:jbehrens@vmware.com" target="_blank">jbehrens@vmware.com</a> <mailto:<a href="mailto:jbehrens@vmware.com" target="_blank">jbehrens@vmware.com</a>>>, Nipun Gupta > > > <<a href="mailto:nipun.gupta@amd.com" target="_blank">nipun.gupta@amd.com</a> <mailto:<a href="mailto:nipun.gupta@amd.com" target="_blank">nipun.gupta@amd.com</a>>>, Nikhil Agarwal > > > > <<a href="mailto:nikhil.agarwal@amd.com" target="_blank">nikhil.agarwal@amd.com</a> <mailto:<a href="mailto:nikhil.agarwal@amd.com" target="_blank">nikhil.agarwal@amd.com</a>>>, Ferruh > > > Yigit <<a href="mailto:ferruh.yigit@amd.com" target="_blank">ferruh.yigit@amd.com</a> <mailto:<a href="mailto:ferruh.yigit@amd.com" target="_blank">ferruh.yigit@amd.com</a>>> > > > > *Subject: *Re: help > > > > > > > > !! External Email > > > > > > > > +Cc some AMD maintainers, they can have an idea about IOMMU > > settings. > > > > > > > > > > > > 20/07/2023 14:44, Igor de Paula: > > > >> I have enabled it in the host and in the BIOS for AMD... > > > >> In the Bios I changed to amd_iommu=on and in the host it's the > > > same for > > > >> either. > > > >> > > > >> On Thu, Jul 20, 2023 at 1:31 PM Thomas Monjalon > > > <<a href="mailto:thomas@monjalon.net" target="_blank">thomas@monjalon.net</a> <mailto:<a href="mailto:thomas@monjalon.net" target="_blank">thomas@monjalon.net</a>>> wrote: > > > >> > > > >> > 20/07/2023 11:35, Igor de Paula: > > > >> > > The weird thing is that it only happens when I am using a > > > host with an > > > >> > AMD > > > >> > > processor. It doesn't happen when I use a host with an Intel > > > processor. > > > >> > > > > >> > So it's probably a matter of BIOS settings for the IOMMU? > > > >> > > > > >> > > > > >> > > On Thu, Jul 20, 2023 at 10:32 AM Thomas Monjalon > > > <<a href="mailto:thomas@monjalon.net" target="_blank">thomas@monjalon.net</a> <mailto:<a href="mailto:thomas@monjalon.net" target="_blank">thomas@monjalon.net</a>>> > > > >> > > wrote: > > > >> > > > > > >> > > > +Cc the vmxnet3 maintainer. > > > >> > > > > > > >> > > > Please Jochen, do you have an idea what's wrong below? > > > >> > > > > > > >> > > > > > > >> > > > 20/07/2023 11:25, Igor de Paula: > > > >> > > > > This is because it can't negotiate the IOMMU type with > > > any port. > > > >> > > > > > > > >> > > > > On Thu, Jul 20, 2023 at 5:08 AM Thomas Monjalon > > > <<a href="mailto:thomas@monjalon.net" target="_blank">thomas@monjalon.net</a> <mailto:<a href="mailto:thomas@monjalon.net" target="_blank">thomas@monjalon.net</a>> > > > >> > > > > > >> > > > wrote: > > > >> > > > > > > > >> > > > > > Hello, > > > >> > > > > > > > > >> > > > > > The first error is "Cause: Error: number of ports must > > > be even" > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > 03/05/2023 18:13, Igor de Paula: > > > >> > > > > > > I am running a VM inside a VMWARE server (vSphere). > > > >> > > > > > > My goal it to set up DPDK with two HW ports, and set > > up a > > > >> > > > virtio_user to > > > >> > > > > > > interact with the kernel stack. > > > >> > > > > > > In another app I have it working but instead of > > > virtio_user I am > > > >> > > > running > > > >> > > > > > > KNI, it works in IOVA-PA mode. > > > >> > > > > > > I am looking to replace the KNI. > > > >> > > > > > > > > > >> > > > > > > When I try to set up virtio_user port as in the doc: > > > >> > > > > > > > > > >> > > > > > > > > >> > > > > > > >> > > > > > > <a href="https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html#virtio-user-as-exception-path" rel="noreferrer" target="_blank">https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html#virtio-user-as-exception-path</a> > > < > > <a href="https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html#virtio-user-as-exception-path" rel="noreferrer" target="_blank">https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html#virtio-user-as-exception-path</a>> > > < > > <a href="https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html#virtio-user-as-exception-path" rel="noreferrer" target="_blank">https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html#virtio-user-as-exception-path</a> > > < > > <a href="https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html#virtio-user-as-exception-path" rel="noreferrer" target="_blank">https://doc.dpdk.org/guides/howto/virtio_user_as_exception_path.html#virtio-user-as-exception-path</a> > > >> > > > >> > > > > > > I get a error it can't run in PA mode. > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > When I try to run as VA mode from a parameter, I get > > the > > > >> > following > > > >> > > > > > errors: > > > >> > > > > > > EAL: lib.eal log level changed from info to debug > > > >> > > > > > > EAL: Detected lcore 0 as core 0 on socket 0 > > > >> > > > > > > EAL: Detected lcore 1 as core 0 on socket 0 > > > >> > > > > > > EAL: Support maximum 128 logical core(s) by > > > configuration. > > > >> > > > > > > EAL: Detected 2 lcore(s) > > > >> > > > > > > EAL: Detected 1 NUMA nodes > > > >> > > > > > > EAL: Checking presence of .so 'librte_eal.so.21.3' > > > >> > > > > > > EAL: Checking presence of .so 'librte_eal.so.21' > > > >> > > > > > > EAL: Checking presence of .so 'librte_eal.so' > > > >> > > > > > > EAL: Detected static linkage of DPDK > > > >> > > > > > > EAL: Ask a virtual area of 0x7000 bytes > > > >> > > > > > > EAL: Virtual area found at 0x100000000 (size = 0x7000) > > > >> > > > > > > EAL: Multi-process socket /var/run/dpdk/rte/mp_socket > > > >> > > > > > > EAL: DPAA Bus not present. Skipping. > > > >> > > > > > > EAL: VFIO PCI modules not loaded > > > >> > > > > > > EAL: Selected IOVA mode 'VA' > > > >> > > > > > > EAL: Probing VFIO support... > > > >> > > > > > > EAL: IOMMU type 1 (Type 1) is supported > > > >> > > > > > > EAL: IOMMU type 7 (sPAPR) is not supported > > > >> > > > > > > EAL: IOMMU type 8 (No-IOMMU) is supported > > > >> > > > > > > EAL: VFIO support initialized > > > >> > > > > > > EAL: Ask a virtual area of 0x5b000 bytes > > > >> > > > > > > EAL: Virtual area found at 0x100007000 (size = > > 0x5b000) > > > >> > > > > > > EAL: Setting up physically contiguous memory... > > > >> > > > > > > EAL: Setting maximum number of open files to 1048576 > > > >> > > > > > > EAL: Detected memory type: socket_id:0 > > > hugepage_sz:1073741824 > > > >> > > > > > > EAL: Creating 2 segment lists: n_segs:128 socket_id:0 > > > >> > > > > > hugepage_sz:1073741824 > > > >> > > > > > > EAL: Ask a virtual area of 0x2000 bytes > > > >> > > > > > > EAL: Virtual area found at 0x100062000 (size = 0x2000) > > > >> > > > > > > EAL: Memseg list allocated at socket 0, page size > > > 0x100000kB > > > >> > > > > > > EAL: Ask a virtual area of 0x2000000000 bytes > > > >> > > > > > > EAL: Virtual area found at 0x140000000 (size = > > > 0x2000000000) > > > >> > > > > > > EAL: VA reserved for memseg list at 0x140000000, size > > > 2000000000 > > > >> > > > > > > EAL: Ask a virtual area of 0x2000 bytes > > > >> > > > > > > EAL: Virtual area found at 0x2140000000 (size = > > 0x2000) > > > >> > > > > > > EAL: Memseg list allocated at socket 0, page size > > > 0x100000kB > > > >> > > > > > > EAL: Ask a virtual area of 0x2000000000 bytes > > > >> > > > > > > EAL: Virtual area found at 0x2180000000 (size = > > > 0x2000000000) > > > >> > > > > > > EAL: VA reserved for memseg list at 0x2180000000, > > > size 2000000000 > > > >> > > > > > > EAL: TSC frequency is ~2350000 KHz > > > >> > > > > > > EAL: Main lcore 0 is ready > > (tid=7f8ad790ec00;cpuset=[0]) > > > >> > > > > > > EAL: lcore 1 is ready (tid=7f8ad6907400;cpuset=[1]) > > > >> > > > > > > EAL: Trying to obtain current memory policy. > > > >> > > > > > > EAL: Setting policy MPOL_PREFERRED for socket 0 > > > >> > > > > > > EAL: Restoring previous memory policy: 0 > > > >> > > > > > > EAL: request: mp_malloc_sync > > > >> > > > > > > EAL: Heap on socket 0 was expanded by 1024MB > > > >> > > > > > > EAL: PCI device 0000:0b:00.0 on NUMA socket -1 > > > >> > > > > > > EAL: probe driver: 15ad:7b0 net_vmxnet3 > > > >> > > > > > > EAL: Expecting 'PA' IOVA mode but current mode is > > > 'VA', not > > > >> > > > > > initializing > > > >> > > > > > > EAL: Requested device 0000:0b:00.0 cannot be used > > > >> > > > > > > EAL: PCI device 0000:13:00.0 on NUMA socket -1 > > > >> > > > > > > EAL: probe driver: 15ad:7b0 net_vmxnet3 > > > >> > > > > > > EAL: Expecting 'PA' IOVA mode but current mode is > > > 'VA', not > > > >> > > > > > initializing > > > >> > > > > > > EAL: Requested device 0000:13:00.0 cannot be used > > > >> > > > > > > EAL: Bus (pci) probe failed. > > > >> > > > > > > EAL: lib.telemetry log level changed from disabled to > > > warning > > > >> > > > > > > EAL: Error - exiting with code: 1 > > > >> > > > > > > Cause: Error: number of ports must be even > > > >> > > > > > > EAL: request: mp_malloc_sync > > > >> > > > > > > EAL: Heap on socket 0 was shrunk by 1024MB > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > For some reason the HW ports won't setup. From what I > > > understand > > > >> > > > > > > net_vmxnet3 should work with VA mode. > > > >> > > > > > > I enabled I/OMUU for the VM. > > > >> > > > > > > The weird thing even when enabled, I still have the > > > >> > > > > > > enable_unsafe_noiommu_mode flag on. > > > >> > > > > > > And because it's on the this: > > > >> > > > > > > > > > >> > > > > > > dev_iova_mode = pci_device_iova_mode(dr, dev); > > > >> > > > > > > > > > >> > > > > > > return PA mode, and it fails. > > > >> > > > > > > > > > >> > > > > > > When I disable it by modifying > > > >> > > > > > > > > > /sys/module/vfio/parameters/enable_unsafe_noiommu_mode, I get > > > >> > another > > > >> > > > > > error. > > > >> > > > > > > The error is that it doesn't find a suitable IOMMU > > type: > > > >> > > > > > > Just putting the relevant message: > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > EAL: Heap on socket 0 was expanded by 1024MB > > > >> > > > > > > EAL: PCI device 0000:0b:00.0 on NUMA socket -1 > > > >> > > > > > > EAL: probe driver: 15ad:7b0 net_vmxnet3 > > > >> > > > > > > EAL: Set IOMMU type 1 (Type 1) failed, error 19 (No > > > such device) > > > >> > > > > > > EAL: Set IOMMU type 7 (sPAPR) failed, error 19 (No > > > such device) > > > >> > > > > > > EAL: Set IOMMU type 8 (No-IOMMU) failed, error 19 (No > > > such > > > >> > device) > > > >> > > > > > > EAL: 0000:0b:00.0 failed to select IOMMU type > > > >> > > > > > > EAL: Requested device 0000:0b:00.0 cannot be used > > > >> > > > > > > EAL: PCI device 0000:13:00.0 on NUMA socket -1 > > > >> > > > > > > EAL: probe driver: 15ad:7b0 net_vmxnet3 > > > >> > > > > > > EAL: Set IOMMU type 1 (Type 1) failed, error 19 (No > > > such device) > > > >> > > > > > > EAL: Set IOMMU type 7 (sPAPR) failed, error 19 (No > > > such device) > > > >> > > > > > > EAL: Set IOMMU type 8 (No-IOMMU) failed, error 19 (No > > > such > > > >> > device) > > > >> > > > > > > EAL: 0000:13:00.0 failed to select IOMMU type > > > >> > > > > > > EAL: Requested device 0000:13:00.0 cannot be used > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > I can see where it fails: > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > const struct vfio_iommu_type * > > > >> > > > > > > vfio_set_iommu_type(int vfio_container_fd) > > > >> > > > > > > { > > > >> > > > > > > unsigned idx; > > > >> > > > > > > for (idx = 0; idx < RTE_DIM(iommu_types); idx++) { > > > >> > > > > > > const struct vfio_iommu_type *t = &iommu_types[idx]; > > > >> > > > > > > > > > >> > > > > > > int ret = ioctl(vfio_container_fd, VFIO_SET_IOMMU, > > > >> > > > > > > t->type_id); > > > >> > > > > > > if (!ret) { > > > >> > > > > > > RTE_LOG(INFO, EAL, "Using IOMMU type %d (%s)\n", > > > >> > > > > > > t->type_id, t->name); > > > >> > > > > > > return t; > > > >> > > > > > > } > > > >> > > > > > > /* not an error, there may be more supported IOMMU > > > types */ > > > >> > > > > > > RTE_LOG(DEBUG, EAL, "Set IOMMU type %d (%s) failed, > > > error " > > > >> > > > > > > "%i (%s)\n", t->type_id, t->name, errno, > > > >> > > > > > > strerror(errno)); > > > >> > > > > > > } > > > >> > > > > > > /* if we didn't find a suitable IOMMU type, fail */ > > > >> > > > > > > return NULL; > > > >> > > > > > > } > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > The ioctl returns -1. > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > I tried many things. > > > >> > > > > > > Enabling/disabling IOMMU. > > > >> > > > > > > Modifying the enable_unsafe_noiommu_mode flag. > > > >> > > > > > > Running in PA mode. > > > >> > > > > > > Any help will be much appreciated. > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > !! External Email: This email originated from outside of the > > > > organization. Do not click links or open attachments unless you > > > > recognize the sender. > > > > > > > > > > > > </blockquote></div>