Re: [PATCH] drm: add func to better detect wether swiotlb is needed

.snip.. > > -u64 drm_get_max_iomem(void) > > +bool drm_need_swiotlb(int dma_bits) > > { > > struct resource *tmp; > > resource_size_t max_iomem = 0; > > > > + /* > > +* Xen paravirtual hosts require swiotlb regardless of requested dma > > +* transfer size. > > +* > > +*

Re: amdgpu/TTM oopses since merging swiotlb_dma_ops into the dma_direct code

On Thu, Jan 10, 2019 at 04:26:43PM +0100, Sibren Vasse wrote: > On Thu, 10 Jan 2019 at 14:57, Christoph Hellwig wrote: > > > > On Thu, Jan 10, 2019 at 10:59:02AM +0100, Michel Dänzer wrote: > > > > > > Hi Christoph, > > > > > > > > > https://bugs.freedesktop.org/109234 (please ignore comments