Re: [PATCH v2 6/6] iommu/mediatek: Convert tlb_flush_walk to gather_add_page

On 2020-11-19 06:18, Yong Wu wrote: MediaTek TLB flush don't care about granule. when unmap, it could gather whole the iova range then do tlb flush once. In current v7s, If unmap the lvl2 pagetable, the steps are: step1: set this current pdg to 0. step2: tlb flush for this lvl2 block iova(1M).

[PATCH v2 6/6] iommu/mediatek: Convert tlb_flush_walk to gather_add_page

MediaTek TLB flush don't care about granule. when unmap, it could gather whole the iova range then do tlb flush once. In current v7s, If unmap the lvl2 pagetable, the steps are: step1: set this current pdg to 0. step2: tlb flush for this lvl2 block iova(1M). step3: free the lvl2 pagetable. This