On 8/27/2021 9:27 AM, Christoph Hellwig wrote:
On Thu, Aug 26, 2021 at 05:26:11PM +0000, Chuck Lever III wrote:Hi- I have a report that net/sunrpc/xprtrdma/frwr_ops.c::frwr_map() is attempting to register a mix of GPU and CPU pages with a single MR during an NFSv4 READ.What GPU pages?
I guess it's GPU device memory.But as Jason mentioned, This is still not supported in RDMA. So there should be a bounce buffer in the IO path between GPU and CPU memory subsystems.
