From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nate Watterson <nwatters-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Subject: Re: [PATCH v2 0/3] arm-smmu: performance optimization
Date: Tue, 19 Sep 2017 00:31:03 -0400
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References: <1505221238-9428-1-git-send-email-thunder.leizhen@huawei.com>
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To: Zhen Lei <thunder.leizhen-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>, Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>, Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>, linux-arm-kernel <linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>, iommu <iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>, Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>, linux-kernel <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Cc: Jinyue Li <lijinyue-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>, Kefeng Wang <wangkefeng.wang-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>, Libin <huawei.libin-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>, Hanjun Guo <guohanjun-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
List-Id: iommu@lists.linux-foundation.org

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.

Tested-by: Nate Watterson <nwatters-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.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(-)
> 

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