On Mon, Mar 02, 2020 at 05:00:23PM -0800, Ralph Campbell wrote:
> When memory is migrated to the GPU, it is likely to be accessed by GPU
> code soon afterwards. Instead of waiting for a GPU fault, map the
> migrated memory into the GPU page tables with the same access permissions
> as the source
On 3/3/20 4:42 AM, Jason Gunthorpe wrote:
On Mon, Mar 02, 2020 at 05:00:23PM -0800, Ralph Campbell wrote:
When memory is migrated to the GPU, it is likely to be accessed by GPU
code soon afterwards. Instead of waiting for a GPU fault, map the
migrated memory into the GPU page tables with the
When memory is migrated to the GPU, it is likely to be accessed by GPU
code soon afterwards. Instead of waiting for a GPU fault, map the
migrated memory into the GPU page tables with the same access permissions
as the source CPU page table entries. This preserves copy on write
semantics.
