Re: [dpdk-dev] [PATCH 1/2] eal/arm64: modify I/O device memory barriers

2018-01-15 Thread Yongseok Koh
> On Jan 7, 2018, at 5:55 PM, Jianbo Liu wrote: > > The 12/26/2017 20:28, Yongseok Koh wrote: >> Instead of using system-wide 'dsb' instruction for IO barriers, 'dmb' is >> sufficient and could bring better performance. Using 'dmb' with Outer >> Shareable Domain option is also consistent with li

Re: [dpdk-dev] [PATCH 1/2] eal/arm64: modify I/O device memory barriers

2018-01-07 Thread Jianbo Liu
The 12/26/2017 20:28, Yongseok Koh wrote: > Instead of using system-wide 'dsb' instruction for IO barriers, 'dmb' is > sufficient and could bring better performance. Using 'dmb' with Outer > Shareable Domain option is also consistent with linux kernel. But in kernel dsb is used for io barriers. ht

Re: [dpdk-dev] [PATCH 1/2] eal/arm64: modify I/O device memory barriers

2018-01-04 Thread Jerin Jacob
-Original Message- > Date: Tue, 26 Dec 2017 20:28:23 -0800 > From: Yongseok Koh > To: adrien.mazarg...@6wind.com, nelio.laranje...@6wind.com, > jerin.ja...@caviumnetworks.com, jianbo@arm.com > CC: dev@dpdk.org, Yongseok Koh , Thomas Speier > > Subject: [PATCH 1/2] eal/arm64: modify