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

2019-02-27 Thread Konrad Rzeszutek Wilk
.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: [PATCH] drm: add func to better detect wether swiotlb is needed

2019-02-21 Thread Paul Durrant
> -Original Message- > From: Michael D Labriola [mailto:michael.d.labri...@gmail.com] > Sent: 19 February 2019 23:08 > To: dri-devel@lists.freedesktop.org; Alex Deucher > ; Christian Koenig ; > Chunming Zhou ; amd-...@lists.freedesktop.org; Monk > Liu > Cc: Juergen Gross ; Christoph