From: "Burakov, Anatoly" <anatoly.burakov@intel.com> To: Vikas Gupta <vikas.gupta@broadcom.com>, dev@dpdk.org Cc: Ajit Kumar Khaparde <ajit.khaparde@broadcom.com>, Vikram Prakash <vikram.prakash@broadcom.com> Subject: Re: [dpdk-dev] Issue with VFIO/IOMMU Date: Fri, 4 Sep 2020 14:50:10 +0100 Message-ID: <828830f7-8f39-72e4-2f64-c20f6b56d8a9@intel.com> (raw) In-Reply-To: <e58baac48f6bbe14e2ccba10e68eeace@mail.gmail.com> On 03-Sep-20 12:09 PM, Vikas Gupta wrote: > Hi, > > I observe an issue with IOVA address returned by api > rte_memzone_reserve_aligned (flags= RTE_MEMZONE_IOVA_CONTIG) used for queue > memory allocation. With high level debugging, I notice that IOVA address > returned in mz->iova is not mapped by VFIO_IOMMU_MAP_DMA so in turn SMMU > exception is seen. I'm not sure i follow. How did you determine that to be the case, given that, by your own admission below, `vfio_type1_dma_mem_map` function is executed several times? > > > > *Details for the setup* > > Platform: Armv8 (Broadcom Stingray) > > DPDK release: DPDK 20.08 <http://fast.dpdk.org/rel/dpdk-20.08.tar.xz> > > PMD patch: > > https://patches.dpdk.org/project/dpdk/list/?series=&submitter=1907&state=&q=&archive=&delegate= > > dpdk-test is launched using below command > > *dpdk-test --vdev <cryptopmd_name> -w 0000:00:00.0 --iova-mode pa * > > > > The test suite is launched over dpdk-test application command prompt using > command ‘cryptodev_<cryptopmd_name>_autotest’ > > The issue is seen when several iterations of above test_suite is executed > which in turn do multiple calls to rte_memzone_reserve_aligned, > rte_mempool_create and rte_memzone_free, rte_mempool_free. > > Function *vfio_type1_dma_mem_map* with map/unmap event is executed several > times during test_suite run. > > > > Any inputs would be helpful. > > > > Thanks, > > Vikas > -- Thanks, Anatoly
next prev parent reply other threads:[~2020-09-04 13:50 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-09-03 11:09 Vikas Gupta 2020-09-04 13:50 ` Burakov, Anatoly [this message] 2020-09-07 13:31 ` Vikas Gupta 2020-09-07 15:43 ` Burakov, Anatoly
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