linux-kernel - Re: [PATCH v2 0/3] arm-smmu: performance optimization

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Message-ID: <59C0B8AD.4010201@huawei.com>
Date:   Tue, 19 Sep 2017 14:26:53 +0800
From:   "Leizhen (ThunderTown)" <thunder.leizhen@...wei.com>
To:     Nate Watterson <nwatters@...eaurora.org>,
        Will Deacon <will.deacon@....com>,
        Joerg Roedel <joro@...tes.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        iommu <iommu@...ts.linux-foundation.org>,
        Robin Murphy <robin.murphy@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>
CC:     Jinyue Li <lijinyue@...wei.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Libin <huawei.libin@...wei.com>,
        Hanjun Guo <guohanjun@...wei.com>
Subject: Re: [PATCH v2 0/3] arm-smmu: performance optimization



On 2017/9/19 12:31, Nate Watterson wrote:
> Hi Leizhen,
> 
> On 9/12/2017 9:00 AM, Zhen Lei wrote:
>> v1 -> v2:
>> base on (add02cfdc9bc2 "iommu: Introduce Interface for IOMMU TLB Flushing")
>>
>> Zhen Lei (3):
>>    iommu/arm-smmu-v3: put off the execution of TLBI* to reduce lock
>>      confliction
>>    iommu/arm-smmu-v3: add support for unmap an iova range with only one
>>      tlb sync
> 
> I tested these (2) patches on QDF2400 hardware and saw performance
> improvements in line with those I reported when testing the original
> series. I don't have any hardware close at hand to test the 3rd patch
> in the series so that will have to come from someone else.
Thanks a lot.

> 
> Tested-by: Nate Watterson <nwatters@...eaurora.org>
> 
> Thanks,
> Nate
> 
>>    iommu/arm-smmu: add support for unmap a memory range with only one tlb
>>      sync
>>
>>   drivers/iommu/arm-smmu-v3.c        | 52 ++++++++++++++++++++++++++++++++++----
>>   drivers/iommu/arm-smmu.c           | 10 ++++++++
>>   drivers/iommu/io-pgtable-arm-v7s.c | 32 +++++++++++++++--------
>>   drivers/iommu/io-pgtable-arm.c     | 30 ++++++++++++++--------
>>   drivers/iommu/io-pgtable.h         |  1 +
>>   5 files changed, 99 insertions(+), 26 deletions(-)
>>
> 

-- 
Thanks!
BestRegards