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Ip=[192.88.158.2]; Helo=[az84smr01.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN1PR0301MB2128 Subject: Re: [dpdk-dev] [PATCH] eal: add notice to make DPDK IOVA aware X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Aug 2017 05:25:46 -0000 On 8/4/2017 9:11 AM, santosh wrote: > On Tuesday 11 July 2017 03:31 PM, Jerin Jacob wrote: > >> When we run DPDK on guest or VFIO mode on host, >> the dpdk library or device will not be directly accessing >> the physical address. Instead, the device does go through >> an IO address translation memory management unit. On x86, >> we call it as IOMMU and on ARM as SMMU. >> >> More details: >> http://osidays.com/osidays/wp-content/uploads/2014/12/Final_OSI2014_IOMMU_DetailedView_Sanil_Anurup.pdf >> >> Based on discussion in the following thread >> http://dpdk.org/ml/archives/dev/2017-July/070850.html >> >> We would like to change reference to physical address to more >> appropriate name as with IOMMU/SMMU with >> the device won't be dealing directly with the physical address. >> >> An ABI change is planned for 17.11 to change following >> data structure or functions to more appropriate name. >> Currently planned to change it iova as instead of phys >> >> Please note: The change will be only for the name and >> functional aspects of the API will remain same. >> >> Following functions/data structures name may change. >> This list is based on v17.05-rc1. It may change based on v17.11 code base. >> >> >> typedef: >> phys_addr_t >> >> structures: >> >> struct rte_memseg::phys_addr >> struct rte_mbuf::buf_physaddr >> >> functions: >> rte_mempool_populate_phys() >> rte_mempool_populate_phys_tab() >> rte_eal_using_phys_addrs() >> rte_mem_virt2phy() >> rte_dump_physmem_layout() >> rte_eal_get_physmem_layout() >> rte_eal_get_physmem_size() >> rte_malloc_virt2phy() >> rte_mem_phy2mch() >> >> >> Signed-off-by: Jerin Jacob >> --- > > Acked-by: Santosh Shukla > > Acked-by: Hemant Agrawal