On Tue, Sep 14, 2021 at 01:16:16PM +0200, Andreas Larsson wrote: > Before the patch, arch_dma_alloc did via srmmu_mapiorange set up pages with > SRMMU_PRIV, which is all fine as it sets up kernel buffers. With your patch > we get PAGE_KERNEL as an argument to dma_pgprot in the corresponding call > path that earlier lead to arch_dma_alloc. PAGE_KERNEL already includes > SRMMU_PRIV so adding it again should not be necessary. You're right, I missed that PAGE_KERNEL already includes SRMMU_PRIV.
