linux-kernel - Re: [PATCH 0/2] iommu/arm-smmu: Allow client devices to select direct mapping

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Date:   Wed, 15 Apr 2020 15:41:19 +0530
From:   Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
To:     Matthias Kaehlcke <mka@...omium.org>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Joerg Roedel <joro@...tes.org>
Cc:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        Rob Clark <robdclark@...il.com>,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, Stephen Boyd <swboyd@...omium.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Tomasz Figa <tfiga@...omium.org>
Subject: Re: [PATCH 0/2] iommu/arm-smmu: Allow client devices to select direct
 mapping

Hi Joerg,

On 2020-04-13 20:42, Jordan Crouse wrote:
> On Thu, Apr 09, 2020 at 04:31:24PM -0700, Matthias Kaehlcke wrote:
>> On Tue, Feb 04, 2020 at 11:12:17PM +0530, Sai Prakash Ranjan wrote:
>> > Hello Robin, Will
>> >
>> > On 2020-01-22 17:18, Sai Prakash Ranjan wrote:
>> > > This series allows drm devices to set a default identity
>> > > mapping using iommu_request_dm_for_dev(). First patch is
>> > > a cleanup to support other SoCs to call into QCOM specific
>> > > implementation and preparation for second patch.
>> > > Second patch sets the default identity domain for drm devices.
>> > >
>> > > Jordan Crouse (1):
>> > >   iommu/arm-smmu: Allow client devices to select direct mapping
>> > >
>> > > Sai Prakash Ranjan (1):
>> > >   iommu: arm-smmu-impl: Convert to a generic reset implementation
>> > >
>> > >  drivers/iommu/arm-smmu-impl.c |  8 +++--
>> > >  drivers/iommu/arm-smmu-qcom.c | 55 +++++++++++++++++++++++++++++++++--
>> > >  drivers/iommu/arm-smmu.c      |  3 ++
>> > >  drivers/iommu/arm-smmu.h      |  5 ++++
>> > >  4 files changed, 65 insertions(+), 6 deletions(-)
>> >
>> > Any review comments?
>> 
>> Ping
>> 
>> What is the status of this series, is it ready to land or are any 
>> changes
>> needed?
>> 
>> Thanks
>> 
>> Matthias
> 
> I think this is up in the air following the changes that Joerg 
> suggested:
> https://lists.linuxfoundation.org/pipermail/iommu/2020-April/043017.html
> 

1st patch for generic reset in this series is independent and can be 
merged.
But seems like requesting direct mapping fails with the joerg's patch 
series.

Thanks,
Sai

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