Hi Zhangfei, On 3/3/20 1:57 PM, zhangfei wrote: > Hi, Eric > > On 2019/11/20 下午6:18, Auger Eric wrote: >> >>>> This series brings the VFIO part of HW nested paging support >>>> in the SMMUv3. >>>> >>>> The series depends on: >>>> [PATCH v9 00/14] SMMUv3 Nested Stage Setup (IOMMU part) >>>> (https://www.spinics.net/lists/kernel/msg3187714.html) >>>> >>>> 3 new IOCTLs are introduced that allow the userspace to >>>> 1) pass the guest stage 1 configuration >>>> 2) pass stage 1 MSI bindings >>>> 3) invalidate stage 1 related caches >>>> >>>> They map onto the related new IOMMU API functions. >>>> >>>> We introduce the capability to register specific interrupt >>>> indexes (see [1]). A new DMA_FAULT interrupt index allows to register >>>> an eventfd to be signaled whenever a stage 1 related fault >>>> is detected at physical level. Also a specific region allows >>>> to expose the fault records to the user space. >>>> >>>> Best Regards >>>> >>>> Eric >>>> >>>> This series can be found at: >>>> https://github.com/eauger/linux/tree/v5.3.0-rc0-2stage-v9 >>> I think you have already tested on ThunderX2, but as a formality, for >>> the whole series: >>> >>> Tested-by: Tomasz Nowicki <tnowicki@xxxxxxxxxxx> >>> qemu: https://github.com/eauger/qemu/tree/v4.1.0-rc0-2stage-rfcv5 >>> kernel: https://github.com/eauger/linux/tree/v5.3.0-rc0-2stage-v9 + >>> Shameer's fix patch >>> >>> In my test I assigned Intel 82574L NIC and perform iperf tests. >> Thank you for your testing efforts. >>> Other folks from Marvell claimed this to be important feature so I asked >>> them to review and speak up on mailing list. >> That's nice to read that! So it is time for me to rebase both the iommu >> and vfio parts. I will submit something quickly. Then I would encourage >> the review efforts to focus first on the iommu part. >> >> > vSVA feature is also very important to us, it will be great if vSVA can > be supported in guest world. > > We just submitted uacce for accelerator, which will be supporting SVA on > host, thanks to Jean's effort. > > https://lkml.org/lkml/2020/2/11/54 > > > However, supporting vSVA in guest is also a key component for accelerator. > > Looking forward this going to be happen. > > > Any respin, I will be very happy to test. OK. Based on your interest and Marvell's interest too, I will respin both iommu & vfio series. Thanks Eric > > > Thanks > > > > _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
