/10] drm/amdgpu: Add multi-GPU DMA mapping helpers
Am 2021-04-26 um 8:09 p.m. schrieb Zeng, Oak:
> As I understand it, when one GPU map another GPU's vram, this vram should
> also be mapped in iommu page table. Also normal GTT memory (versus userptr)
> also need to be mapped in iommu.
Am 2021-04-26 um 8:09 p.m. schrieb Zeng, Oak:
> As I understand it, when one GPU map another GPU's vram, this vram should
> also be mapped in iommu page table. Also normal GTT memory (versus userptr)
> also need to be mapped in iommu. But don't see this code below.
Right, I'm not solving all
As I understand it, when one GPU map another GPU's vram, this vram should also
be mapped in iommu page table. Also normal GTT memory (versus userptr) also
need to be mapped in iommu. But don't see this code below. I only see you map
userptr in iommu. Maybe you map them in iommu not during
