| Subject | Re: [PATCH v2 19/24] iommu: Expose DMA domain strictness via sysfs | From | John Garry <> | Date | Fri, 30 Jul 2021 11:20:42 +0100 |
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On 28/07/2021 16:58, Robin Murphy wrote: > The sysfs interface for default domain types exists primarily so users > can choose the performance/security tradeoff relevant to their own > workload. As such, the choice between the policies for DMA domains fits > perfectly as an additional point on that scale - downgrading a > particular device from a strict default to non-strict may be enough to > let it reach the desired level of performance, while still retaining > more peace of mind than with a wide-open identity domain. Now that we've > abstracted non-strict mode as a distinct type of DMA domain, allow it to > be chosen through the user interface as well. > > Signed-off-by: Robin Murphy<robin.murphy@arm.com> > ---
Reviewed-by: John Garry <john.garry@huawei.com>
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