Re: [PATCH v2 2/3] mm: Add support for SLAB_CACHE_DMA32

On Sun, 11 Nov 2018, Nicolas Boichat wrote: > SLAB_CACHE_DMA32 is only available after explicit kmem_cache_create calls, > no default cache is created for kmalloc. Add a test in check_slab_flags > for this. This does not define the dma32 kmalloc array. Is that intentional? In that case you need t

Re: [PATCH v2 3/3] iommu/io-pgtable-arm-v7s: Request DMA32 memory, and improve debugging

On Wed, 21 Nov 2018, Will Deacon wrote: > > +#define ARM_V7S_TABLE_SLAB_CACHE SLAB_CACHE_DMA32 SLAB_CACHE_DMA32??? WTH is going on here? We are trying to get rid of the dma slab array. ___ iommu mailing list iommu@lists.linux-foundation.org https://lis

Re: [PATCH v2 0/3] iommu/io-pgtable-arm-v7s: Use DMA32 zone for page tables

On Sun, 11 Nov 2018, Nicolas Boichat wrote: > This is a follow-up to the discussion in [1], to make sure that the page > tables allocated by iommu/io-pgtable-arm-v7s are contained within 32-bit > physical address space. Page tables? This means you need a page frame? Why go through the slab alloca

Re: [PATCH v2 3/3] iommu/io-pgtable-arm-v7s: Request DMA32 memory, and improve debugging

On Wed, 21 Nov 2018, Robin Murphy wrote: > On 21/11/2018 17:38, Christopher Lameter wrote: > > On Wed, 21 Nov 2018, Will Deacon wrote: > > > > > > +#define ARM_V7S_TABLE_SLAB_CACHE SLAB_CACHE_DMA32 > > > > SLAB_CACHE_DMA32??? WTH is going on here? We ar