Re: [dpdk-dev] [PATCH v3 1/4] igb_uio: add wc option

2018-06-29 Thread Ferruh Yigit
On 6/29/2018 11:24 AM, Rafal Kozik wrote: > Write combining (WC) increases NIC performance by making better > utilization of PCI bus, but cannot be use by all PMDs. > > To get internal_addr memory need to be mapped. But as memory could not be > mapped twice: with and without WC, it should be skipp

[dpdk-dev] [PATCH v3 1/4] igb_uio: add wc option

2018-06-29 Thread Rafal Kozik
Write combining (WC) increases NIC performance by making better utilization of PCI bus, but cannot be use by all PMDs. To get internal_addr memory need to be mapped. But as memory could not be mapped twice: with and without WC, it should be skipped for WC. [1] To do not spoil other drivers that p