Re: [PATCH 1/2] iommu/io-pgtable-arm: Add support for non-coherent page tables

2019-01-28 Thread Vivek Gautam
On Mon, Jan 21, 2019 at 6:43 PM Robin Murphy wrote: > > On 17/01/2019 09:27, Vivek Gautam wrote: > > From Robin's comment [1] about touching TCR configurations - > > > > "TBH if we're going to touch the TCR attributes at all then we should > > probably correct that sloppiness first - there's an

Re: [PATCH 1/2] iommu/io-pgtable-arm: Add support for non-coherent page tables

2019-01-21 Thread Robin Murphy
On 17/01/2019 09:27, Vivek Gautam wrote: From Robin's comment [1] about touching TCR configurations - "TBH if we're going to touch the TCR attributes at all then we should probably correct that sloppiness first - there's an occasional argument for using non-cacheable pagetables even on a

[PATCH 1/2] iommu/io-pgtable-arm: Add support for non-coherent page tables

2019-01-17 Thread Vivek Gautam
>From Robin's comment [1] about touching TCR configurations - "TBH if we're going to touch the TCR attributes at all then we should probably correct that sloppiness first - there's an occasional argument for using non-cacheable pagetables even on a coherent SMMU if reducing snoop traffic/latency