On 30-Oct-18 2:04 PM, Alejandro Lucero wrote:
On Tue, Oct 30, 2018 at 12:37 PM Alejandro Lucero <[email protected] <mailto:[email protected]>> wrote:On Tue, Oct 30, 2018 at 12:22 PM Lin, Xueqin <[email protected] <mailto:[email protected]>> wrote: Some found on some our servers:____ If not add ”intel_iommu=on iommu=pt” in /boot/grub2/grub.cfg file, then reboot to make it effective.____ 18.11 rc1: Success to setup testpmd and secondary process.____ __ __ If add ”intel_iommu=on iommu=pt” in /boot/grub2/grub.cfg file, then reboot to make it effective.____ 18.11 rc1: Fail to setup testpmd and secondary process.____ 18.11 rc1+ dma_mask_fix patch: success to setup testpmd, but fail to setup secondary process.____ __ __ Maybe ”intel_iommu=on iommu=pt” enable or not result in our test gap. ____ Most of our team servers should enable the IOMMU for VT-d and vfio test. ____ __ It makes sense because the problem is when the IOVA mode is set inside drivers/bus/pci/linux/pci.c and if there is not IOMMU, not call to rte_eal_check_dma_mask at all. __ Best regards,____ Xueqin____ __ __ *From:*Alejandro Lucero [mailto:[email protected] <mailto:[email protected]>] *Sent:* Tuesday, October 30, 2018 6:38 PM *To:* Lin, Xueqin <[email protected] <mailto:[email protected]>> *Cc:* Yao, Lei A <[email protected] <mailto:[email protected]>>; Thomas Monjalon <[email protected] <mailto:[email protected]>>; dev <[email protected] <mailto:[email protected]>>; Xu, Qian Q <[email protected] <mailto:[email protected]>>; Burakov, Anatoly <[email protected] <mailto:[email protected]>>; Yigit, Ferruh <[email protected] <mailto:[email protected]>>; Zhang, Qi Z <[email protected] <mailto:[email protected]>> *Subject:* Re: [dpdk-dev] [PATCH v3 0/6] use IOVAs check based on DMA mask____ __ __ __ __ On Tue, Oct 30, 2018 at 10:34 AM Lin, Xueqin <[email protected] <mailto:[email protected]>> wrote:____ Hi Lucero,____ ____ No, we have reproduced multi-process issues(include symmetric_mp, simple_mp, hotplug_mp, multi-process unit test… )on most of our servers. ____ It is also strange that 1~2 servers don’t have the issue.____ ____ __ __ Yes, you are right. I could execute it but it was due to how this problem triggers. ____ I think I can fix this and at the same time solving properly the initial issue without any limitation like that potential race condition I mentioned. ____ I can give you a patch to try in a couple of hours. ____ __ Hi Lin, Can you try the patch attached? Thanks
Hi Alejandro, Attachments are not supported on the mailing list :) -- Thanks, Anatoly
