linux-kernel - Re: [PATCH V6 6/6] iommu/arm-smmu: Set privileged attribute to 'default' instead of 'unprivileged'

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Message-ID: <20161206173110.GT2498@arm.com>
Date:   Tue, 6 Dec 2016 17:31:11 +0000
From:   Will Deacon <will.deacon@....com>
To:     Sricharan R <sricharan@...eaurora.org>
Cc:     jcrouse@...eaurora.org, pdaly@...eaurora.org,
        jgebben@...eaurora.org, joro@...tes.org,
        linux-kernel@...r.kernel.org, pratikp@...eaurora.org,
        iommu@...ts.linux-foundation.org, robin.murphy@....com,
        tzeng@...eaurora.org, linux-arm-kernel@...ts.infradead.org,
        mitchelh@...eaurora.org, vinod.koul@...el.com
Subject: Re: [PATCH V6 6/6] iommu/arm-smmu: Set privileged attribute to
 'default' instead of 'unprivileged'

On Fri, Dec 02, 2016 at 08:25:09PM +0530, Sricharan R wrote:
> Currently the driver sets all the device transactions privileges
> to UNPRIVILEGED, but there are cases where the iommu masters wants
> to isolate privileged supervisor and unprivileged user.
> So don't override the privileged setting to unprivileged, instead
> set it to default as incoming and let it be controlled by the pagetable
> settings.
> 
> Signed-off-by: Sricharan R <sricharan@...eaurora.org>

Acked-by: Will Deacon <will.deacon@....com>

I'll let you and Robin sort out what you want to do with this series :)

Will