Re: [PATCH v4 1/1] iommu/io-pgtable-arm: Add support to use system cache

2019-05-14 Thread Vivek Gautam
On Tue, May 14, 2019 at 12:26 PM Vivek Gautam wrote: > > Hi Robin, > > > On Mon, May 13, 2019 at 5:02 PM Robin Murphy wrote: > > > > On 13/05/2019 11:04, Vivek Gautam wrote: > > > Few Qualcomm platforms such as, sdm845 have an additional outer > > > cache called as System cache, aka. Last level c

Re: [PATCH v4 1/1] iommu/io-pgtable-arm: Add support to use system cache

2019-05-13 Thread Vivek Gautam
Hi Robin, On Mon, May 13, 2019 at 5:02 PM Robin Murphy wrote: > > On 13/05/2019 11:04, Vivek Gautam wrote: > > Few Qualcomm platforms such as, sdm845 have an additional outer > > cache called as System cache, aka. Last level cache (LLC) that > > allows non-coherent devices to upgrade to using ca

Re: [PATCH v4 1/1] iommu/io-pgtable-arm: Add support to use system cache

2019-05-13 Thread Robin Murphy
On 13/05/2019 11:04, Vivek Gautam wrote: Few Qualcomm platforms such as, sdm845 have an additional outer cache called as System cache, aka. Last level cache (LLC) that allows non-coherent devices to upgrade to using caching. This cache sits right before the DDR, and is tightly coupled with the me

[PATCH v4 1/1] iommu/io-pgtable-arm: Add support to use system cache

2019-05-13 Thread Vivek Gautam
Few Qualcomm platforms such as, sdm845 have an additional outer cache called as System cache, aka. Last level cache (LLC) that allows non-coherent devices to upgrade to using caching. This cache sits right before the DDR, and is tightly coupled with the memory controller. The clients using this cac