On 2019/8/23 15:50, Will Deacon wrote:
> On Fri, Aug 23, 2019 at 10:45:49AM +0800, Zhen Lei wrote:
>> v2 --> v3:
>> As Will Deacon's suggestion, I changed the lock type of
>> arm_smmu_domain.devices_lock from spinlock_t to rwlock_t, and I saw that the
>> performance is all right. And further use nr_ats_masters to quickly check
>> have
>> no obvious effect, so I drop it.
>
> :/
>
> I already sent two versions of a series fixing this without any locking at
> all on the ->unmap() path, and you were on cc. I've also queued that stuff
> up.
>
> Did you not receive my patches?
Sorry, my message filter setting is a bit wrong, must contains
"linux-ker...@vger.kernel.org", I have corrected it.
>
> v1: https://lists.linuxfoundation.org/pipermail/iommu/2019-August/038306.html
> v2: https://lists.linuxfoundation.org/pipermail/iommu/2019-August/038374.html
OK, I will test it when it's my turn to use the board.
>
> Queued:
> https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git/log/?h=for-joerg/arm-smmu/smmu-v3
>
> Will
>
> .
>
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