On Tue, Oct 30, 2018 at 2:14 PM Burakov, Anatoly <[email protected]> wrote:
> 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 :) > Apologies. I should have sent it just to Lin. > > -- > Thanks, > Anatoly >
