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 [thread overview]
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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